Update changelog

CHANGELOG.md

@@ -17,9 +17,10 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
   See our [versioning policy](VERSIONING.md) for more information about these stability guarantees. (#5629)
 - Add `InstrumentationScope` field to `SpanStub` in `go.opentelemetry.io/otel/sdk/trace/tracetest`, as a replacement for the deprecated `InstrumentationLibrary`. (#5627)
 - Zero value of `SimpleProcessor` in `go.opentelemetry.io/otel/sdk/log` no longer panics. (#5665)
-- The `FilterProcessor` interface type is added in `go.opentelemetry.io/otel/sdk/log`.
-  This is an optional interface that log `Processor`s can implement to instruct the `Logger` if a `Record` will be processed or not.
-  This replaces the existing `Enabled` method that is removed from the `Processor` interface itself. (#5692)
+- The `FilterProcessor` interface type is added in `go.opentelemetry.io/otel/sdk/log/internal/x`.
+  This is an optional and experimental interface that log `Processor`s can implement to instruct the `Logger` if a `Record` will be processed or not.
+  It replaces the existing `Enabled` method that is removed from the `Processor` interface itself.
+  It does not fall within the scope of the OpenTelemetry Go versioning and stability [policy](./VERSIONING.md) and it may be changed in backwards incompatible ways or removed in feature releases. (#5692)
 
 ### Changed