diff --git a/.github/workflows/snyk.yaml b/.github/workflows/snyk.yaml
index 97a9baa6..f705c8a5 100644
--- a/.github/workflows/snyk.yaml
+++ b/.github/workflows/snyk.yaml
@@ -3,6 +3,7 @@ on:
   pull_request:
     branches:
       - master
+      - release-*
 
 jobs:
   security:
diff --git a/commons/catalogue/unit.avsc b/commons/catalogue/unit.avsc
index 0a4585d3..d55276f4 100644
--- a/commons/catalogue/unit.avsc
+++ b/commons/catalogue/unit.avsc
@@ -8,6 +8,7 @@
     "CALORIES_PER_SEC",
     "CELSIUS",
     "DEGREE",
+    "MILLI_G",
     "G",
     "KILO_OHM",
     "LUX",
@@ -21,6 +22,7 @@
     "RMSSD_IN_MILLI_SEC",
     "SECOND",
     "MICRO_VOLT",
+    "VOLT",
     "UNKNOWN"
   ]
 }
diff --git a/commons/passive/audio/phone_audio_input.avsc b/commons/passive/audio/phone_audio_input.avsc
new file mode 100644
index 00000000..518a4565
--- /dev/null
+++ b/commons/passive/audio/phone_audio_input.avsc
@@ -0,0 +1,24 @@
+{
+    "namespace": "org.radarcns.passive.audio",
+    "type": "record",
+    "name": "PhoneAudioInput",
+    "doc": "Uncompressed high-quality audio data collected by the PhoneAudioInput plugin, making use of low-level classes that interact directly with hardware.",
+    "fields": [
+        { "name": "time", "type": "double", "doc": "Device timestamp in UTC (s)." },
+        { "name": "timeReceived", "type": "double", "doc": "Device receiver timestamp in UTC (s)." },
+        { "name": "fileName", "type": "string", "doc": "Name of the audio file after it is saved to S3." },
+        { "name": "filePath", "type": "string", "doc": "Path of the audio file retrieved after uploading to S3 storage." },
+        { "name": "deviceName", "type": "string", "doc": "Name of the input audio device used for routing during this recording." },
+        { "name": "deviceId", "type": "string", "doc": "Identifier associated with the input device used for audio recording." },
+        { "name": "deviceSampleRates", "type": "string", "doc": "Supported sample rates of the input audio device." },
+        { "name": "deviceEncodings", "type": "string", "doc": "Supported encodings of the input audio device." },
+        { "name": "deviceType", "type": "string", "doc": "Type of the input audio device used for recording." },
+        { "name": "deviceChannelCounts", "type": "string", "doc": "Supported channel counts of the input audio device." },
+        { "name": "audioLength", "type": "long", "doc": "Length of the audio recording (in milliseconds)." },
+        { "name": "audioFileSize", "type": "long", "doc": "Size of the audio file (in bytes)." },
+        { "name": "hadPlayback", "type": "boolean", "doc": "Whether the recorded audio file was played before uploading to s3 storage." },
+        { "name": "audioFileExtension", "type": "string", "doc": "Extension of the audio file." },
+        { "name": "configuredSampleRate", "type": "int", "doc": "Sample rate for audio recording configured by firebase remote configs in application."},
+        { "name": "configuredEncoding", "type": "string", "doc": "Encoding for audio recording configured by firebase remote configs in application." }
+    ]
+}
diff --git a/commons/passive/polar/polar_acceleration.avsc b/commons/passive/polar/polar_acceleration.avsc
new file mode 100644
index 00000000..3839db43
--- /dev/null
+++ b/commons/passive/polar/polar_acceleration.avsc
@@ -0,0 +1,14 @@
+{
+  "namespace": "org.radarcns.passive.polar",
+  "type": "record",
+  "name": "PolarAcceleration",
+  "doc": "Accelerometer data. Axis specific acceleration data in mG.",
+  "fields": [
+    { "name": "deviceName", "type": "string", "doc": "Polar device name." },
+    { "name": "time", "type": "double", "doc": "Device timestamp in UTC (ns)." },
+    { "name": "timeReceived", "type": "double", "doc": "Device receiver timestamp in UTC (s)." },
+    { "name": "x", "type": "int", "doc": "Acceleration in the x-axis (mG)." },
+    { "name": "y", "type": "int", "doc": "Acceleration in the y-axis (mG)." },
+    { "name": "z", "type": "int", "doc": "Acceleration in the z-axis (mG)." }
+  ]
+}
diff --git a/commons/passive/polar/polar_battery_level.avsc b/commons/passive/polar/polar_battery_level.avsc
new file mode 100644
index 00000000..ccb3c3c7
--- /dev/null
+++ b/commons/passive/polar/polar_battery_level.avsc
@@ -0,0 +1,12 @@
+{
+  "namespace": "org.radarcns.passive.polar",
+  "type": "record",
+  "name": "PolarBatteryLevel",
+  "doc": "Device battery level.",
+  "fields": [
+    { "name": "deviceName", "type": "string", "doc": "Polar device name." },
+    { "name": "time", "type": "double", "doc": "Device timestamp in UTC (s)." },
+    { "name": "timeReceived", "type": "double", "doc": "Device receiver timestamp in UTC (s)." },
+    { "name": "batteryLevel", "type": "float", "doc": "Battery level from 0 to 1." }
+  ]
+}
diff --git a/commons/passive/polar/polar_ecg.avsc b/commons/passive/polar/polar_ecg.avsc
new file mode 100644
index 00000000..3f8f4d96
--- /dev/null
+++ b/commons/passive/polar/polar_ecg.avsc
@@ -0,0 +1,12 @@
+{
+  "namespace": "org.radarcns.passive.polar",
+  "type": "record",
+  "name": "PolarEcg",
+  "doc": "Data from ECG in yV.",
+  "fields": [
+    { "name": "deviceName", "type": "string", "doc": "Polar device name." },
+    { "name": "time", "type": "double", "doc": "Device timestamp in UTC (ns)." },
+    { "name": "timeReceived", "type": "double", "doc": "Device receiver timestamp in UTC (s)." } ,
+    { "name": "ecgSignal", "type": "int", "doc": "ECG signal (yV)." }
+  ]
+}
diff --git a/commons/passive/polar/polar_heart_rate.avsc b/commons/passive/polar/polar_heart_rate.avsc
new file mode 100644
index 00000000..1a4466eb
--- /dev/null
+++ b/commons/passive/polar/polar_heart_rate.avsc
@@ -0,0 +1,16 @@
+{
+  "namespace": "org.radarcns.passive.polar",
+  "type": "record",
+  "name": "PolarHeartRate",
+  "doc": "Heart rate as beats per minute.",
+  "fields": [
+    { "name": "deviceName", "type": "string", "doc": "Polar device name." },
+    { "name": "time", "type": "double", "doc": "Device receiver timestamp in UTC (ns)." },
+    { "name": "timeReceived", "type": "double", "doc": "Device receiver timestamp in UTC (s)." },
+    { "name": "heartRate", "type": "int", "doc": "Heart rate (bpm)." },
+    { "name": "rrsMs", "type": {"type": "array", "items": "int"}, "doc": "Data for rrsMs." },
+    { "name": "rrAvailable", "type": "boolean", "doc": "Data for rrAvailable." },
+    { "name": "contactStatus", "type": "boolean", "doc": "Data for contactStatus." },
+    { "name": "contactStatusSupported", "type": "boolean", "doc": "Data for contactStatusSupported." }
+  ]
+}
diff --git a/commons/passive/polar/polar_pp_interval.avsc b/commons/passive/polar/polar_pp_interval.avsc
new file mode 100644
index 00000000..8c358b2c
--- /dev/null
+++ b/commons/passive/polar/polar_pp_interval.avsc
@@ -0,0 +1,17 @@
+{
+  "namespace": "org.radarcns.passive.polar",
+  "type": "record",
+  "name": "PolarPpInterval",
+  "doc": "PP interval representing cardiac pulse-to-pulse interval extracted from PPG signal.",
+  "fields": [
+    { "name": "deviceName", "type": "string", "doc": "Polar device name." },
+    { "name": "time", "type": "double", "doc": "Device timestamp in UTC (s)." },
+    { "name": "timeReceived", "type": "double", "doc": "Device receiver timestamp in UTC (s)." },
+    { "name": "blockerBit", "type": "boolean", "doc": "Data for blockerBit." },
+    { "name": "errorEstimate", "type": "int", "doc": "Data for errorEstimate." },
+    { "name": "heartRate", "type": "int", "doc": "Data for errorEstimate." },
+    { "name": "ppInterval", "type": "int", "doc": "The duration (s) of the detected inter-beat interval (i.e., the distance in seconds from the previous beat)." },
+    { "name": "skinContactStatus", "type": "boolean", "doc": "Data for skinContactStatus." },
+    { "name": "skinContactSupported", "type": "boolean", "doc": "Data for skinContactSupported." }
+  ]
+}
diff --git a/commons/passive/polar/polar_ppg.avsc b/commons/passive/polar/polar_ppg.avsc
new file mode 100644
index 00000000..c65efa6e
--- /dev/null
+++ b/commons/passive/polar/polar_ppg.avsc
@@ -0,0 +1,15 @@
+{
+  "namespace": "org.radarcns.passive.polar",
+  "type": "record",
+  "name": "PolarPpg",
+  "doc": "Data from PPG channels.",
+  "fields": [
+    { "name": "deviceName", "type": "string", "doc": "Polar device name." },
+    { "name": "time", "type": "double", "doc": "Device timestamp in UTC (ns)." },
+    { "name": "timeReceived", "type": "double", "doc": "Device receiver timestamp in UTC (s)." } ,
+    { "name": "ppg0", "type": "int", "doc": "PPG0." },
+    { "name": "ppg1", "type": "int", "doc": "PPG1." },
+    { "name": "ppg2", "type": "int", "doc": "PPG2." },
+    { "name": "ambient", "type": "int", "doc": "Ambient channel representing the background noise caused by other light sources, so it can be used to remove the background noise from ppg channels." }
+  ]
+}
diff --git a/java-sdk/buildSrc/src/main/kotlin/Versions.kt b/java-sdk/buildSrc/src/main/kotlin/Versions.kt
index 3ec38247..34ac30c5 100644
--- a/java-sdk/buildSrc/src/main/kotlin/Versions.kt
+++ b/java-sdk/buildSrc/src/main/kotlin/Versions.kt
@@ -1,12 +1,12 @@
 object Versions {
-    const val project = "0.8.10"
+    const val project = "0.8.11"
 
     const val kotlin = "1.9.10"
     const val java = 17
     const val avroGenerator = "1.9.1"
 
     const val radarCommons = "1.1.2"
-    const val avro = "1.11.3"
+    const val avro = "1.11.4"
     const val jackson = "2.16.1"
     const val argparse = "0.9.0"
     const val radarJersey = "0.11.1"
diff --git a/specifications/passive/android_phone_audio-1.0.0.yml b/specifications/passive/android_phone_audio-1.0.0.yml
new file mode 100644
index 00000000..433a35cb
--- /dev/null
+++ b/specifications/passive/android_phone_audio-1.0.0.yml
@@ -0,0 +1,13 @@
+#====================================== Android Phone Audio =======================================#
+vendor: ANDROID
+model: PHONE
+version: 1.0.0
+data:
+  # Phone Audio Input
+  - type: PHONE_AUDIO_INPUT
+    app_provider: .phone.PhoneAudioInputProvider
+    processing_state: RADAR
+    topic: android_phone_audio_input
+    value_schema: .passive.audio.PhoneAudioInput
+    sample_rate:
+      dynamic: true
diff --git a/specifications/passive/polar-1.0.0.yml b/specifications/passive/polar-1.0.0.yml
new file mode 100644
index 00000000..5622ef5c
--- /dev/null
+++ b/specifications/passive/polar-1.0.0.yml
@@ -0,0 +1,48 @@
+#====================================== POLAR H10 or Vantage V3 device =====================================#
+vendor: POLAR
+model: GENERIC
+version: 1.0.0
+app_provider: .polar.PolarProvider
+data:
+  - type: ACCELEROMETER
+    sample_rate:
+      frequency: 50
+    unit: MILLI_G
+    processing_state: RAW
+    topic: android_polar_acceleration
+    value_schema: .passive.polar.PolarAcceleration
+  - type: BATTERY
+    sample_rate:
+      dynamic: true
+    unit: PERCENTAGE
+    processing_state: RAW
+    topic: android_polar_battery_level
+    value_schema: .passive.polar.PolarBatteryLevel
+  - type: ECG
+    sample_rate:
+      dynamic: true
+    unit: VOLT
+    processing_state: RAW
+    topic: android_polar_ecg
+    value_schema: .passive.polar.PolarEcg
+  - type: PPG
+    sample_rate:
+      dynamic: true
+    unit: UNKNOWN
+    processing_state: RAW
+    topic: android_polar_ppg
+    value_schema: .passive.polar.PolarPpg
+  - type: HEART_RATE
+    sample_rate:
+      frequency: 1
+    unit: BEATS_PER_MIN
+    processing_state: VENDOR
+    topic: android_polar_heart_rate
+    value_schema: .passive.polar.PolarHeartRate
+  - type: PULSE_TO_PULSE_INTERVAL
+    sample_rate:
+      dynamic: true
+    unit: SECOND
+    processing_state: VENDOR
+    topic: android_polar_pulse_to_pulse_interval
+    value_schema: .passive.polar.PolarPpInterval