diff --git a/current.txt b/current.txt
index cc15322b83..4f1e86b687 100644
--- a/current.txt
+++ b/current.txt
@@ -380,3 +380,9 @@ e362203b941f18bd4cba29a62adfa02453ed00d6be5b72cdb6c4d7e0bf394a40 android.hardwar
 21757d0e5dd4b7e4bd981a4a20531bca3c32271ad9777b17b74eb5a1ea508384 android.hardware.wifi.supplicant@1.1::ISupplicantStaIface
 cd4330c3196bda1d642a32abfe23a7d64ebfbda721940643af6867af3b3f0aa9 android.hardware.wifi.supplicant@1.1::ISupplicantStaIfaceCallback
 10ff2fae516346b86121368ce5790d5accdfcb73983246b813f3d488b66db45a android.hardware.wifi.supplicant@1.1::ISupplicantStaNetwork
+
+# ABI preserving changes to HALs during Android Q
+574e8f1499436fb4075894dcae0b36682427956ecb114f17f1fe22d116a83c6b android.hardware.neuralnetworks@1.0::IPreparedModel
+b07802a3433a9abec67a41525dc04eab9efb62760414e1d37e2f72cc5ae9cb8a android.hardware.neuralnetworks@1.0::types
+bf18f51bfee84461f9831f3754f5c68ce2b29e42fe9d59ef8a33163e77f8edbf android.hardware.neuralnetworks@1.1::types
+
diff --git a/neuralnetworks/1.0/IPreparedModel.hal b/neuralnetworks/1.0/IPreparedModel.hal
index ee406fb79b..ecaa7f830a 100644
--- a/neuralnetworks/1.0/IPreparedModel.hal
+++ b/neuralnetworks/1.0/IPreparedModel.hal
@@ -42,6 +42,12 @@ interface IPreparedModel {
      * execute function. This callback must be provided with the ErrorStatus of
      * the execution.
      *
+     * If the prepared model was prepared from a model wherein all
+     * tensor operands have fully specified dimensions, and the inputs
+     * to the function are valid, then the execution should launch
+     * and complete successfully (ErrorStatus::NONE). There must be
+     * no failure unless the device itself is in a bad state.
+     *
      * Multiple threads can call the execute function on the same IPreparedModel
      * object concurrently with different requests.
      *
diff --git a/neuralnetworks/1.0/types.hal b/neuralnetworks/1.0/types.hal
index 1ae1726ca3..5a40e4e289 100644
--- a/neuralnetworks/1.0/types.hal
+++ b/neuralnetworks/1.0/types.hal
@@ -1668,8 +1668,7 @@ struct Model {
     vec<uint8_t> operandValues;
 
     /**
-     * A collection of shared memory pools containing operand data that were
-     * registered by the model.
+     * A collection of shared memory pools containing operand values.
      *
      * An operand's value must be located here if and only if Operand::lifetime
      * equals OperandLifeTime::CONSTANT_REFERENCE.
@@ -1721,6 +1720,9 @@ struct RequestArgument {
  * 1) Provides the input and output data to be used when executing the model.
  * 2) Specifies any updates to the input operand metadata that were left
  *    unspecified at model preparation time.
+ *
+ * An output must not overlap with any other output, with an input, or
+ * with an operand of lifetime CONSTANT_REFERENCE.
  */
 struct Request {
     /**
diff --git a/neuralnetworks/1.1/types.hal b/neuralnetworks/1.1/types.hal
index e4c656db44..b5718f352c 100644
--- a/neuralnetworks/1.1/types.hal
+++ b/neuralnetworks/1.1/types.hal
@@ -404,8 +404,7 @@ struct Model {
     vec<uint8_t> operandValues;
 
     /**
-     * A collection of shared memory pools containing operand data that were
-     * registered by the model.
+     * A collection of shared memory pools containing operand values.
      *
      * An operand's value must be located here if and only if Operand::lifetime
      * equals OperandLifeTime::CONSTANT_REFERENCE.