Release notes for 1.1.0-RC2 (#918)

docs/src/main/paradox/release-notes/1.1.x.md

@@ -7,6 +7,37 @@ project.description: Release notes for all Alpakka Kafka 1.1.x releases.
 In case you are browsing a specific version's documentation: check out the [latest release notes](https://doc.akka.io/docs/alpakka-kafka/current/release-notes/)
 @@@
 
+Alpakka Kafka 1.1 changes the internals of how offset commits are sent to the Kafka broker. The new implementation is very beneficial for high-throughput consumers as committing is now connected to the regular polling of the Kafka consumer, which reduces pressure on Kafka.
+
+It adds a new source for advanced usage: `committablePartitionedManualOffsetSource` which may be used when offsets are stored external to Kafka, but tools for consumer lag which rely on offsets being committed to Kafka are in use.
+
+As a new experimental feature, offset committing is now possible without applying backpressure to the stream when commits are not processed at the same speed. This can be controlled via the `delivery` committer setting.
+
+Exceptions from the Kafka consumer API are now properly passed back and fail the stream.
+
+This goes along with a few improvements to the documentation.
+
+
+# 1.1.0-RC2
+
+Released: 2019-10-02
+
+- Committable partitioned source with manual offset seek support [#908](https://github.com/akka/alpakka-kafka/issues/908) by [@seglo](https://github.com/seglo)
+
+The detailed list of changes is found in [the 1.1.0-RC2 Github release listing](https://github.com/akka/alpakka-kafka/releases/tag/v1.1.0-RC2).
+
+This release is compiled and tested against [Akka 2.5](https://doc.akka.io/docs/akka/2.5/) for Scala 2.11, 2.12 and 2.13, [Akka 2.6-M8](https://doc.akka.io/docs/akka/2.6/) for Scala 2.12, and 2.13 and both Akka versions on Adopt OpenJDK 1.8 and 11.
+
+**If we do not get any reports that speak against it, we'll release Alpakka Kafka 1.1.0 in a few weeks.**
+
+This release contains contributions by:
+
+| Author | Commits | Lines added | Lines removed |
+| ------ | ------- | ----------- | ------------- |
+| [<img width="20" alt="ennru" src="https://avatars3.githubusercontent.com/u/458526?v=4&s=40"> **ennru**](https://github.com/ennru) | 10 | 303 | 207 |
+| [<img width="20" alt="seglo" src="https://avatars2.githubusercontent.com/u/1148412?v=4&s=40"> **seglo**](https://github.com/seglo) | 1 | 249 | 25 |
+| [<img width="20" alt="raboof" src="https://avatars2.githubusercontent.com/u/131856?v=4&s=40"> **raboof**](https://github.com/raboof) | 1 | 1 | 1 |
+
 # 1.1.0-RC1
 
 Released: 2019-09-05
@@ -19,7 +50,6 @@ Exceptions from the Kafka consumer API are now properly passed back and fail the
 
 This goes along with a few improvements to the documentation.
 
-**If we do not get any reports that speak against it, we'll release Alpakka Kafka 1.1.0 in a few weeks.**
 
 ## Notable changes since 1.0.5
 
@@ -28,11 +58,11 @@ This goes along with a few improvements to the documentation.
 - Introduce setting for committing without backpressure [#883](https://github.com/akka/alpakka-kafka/pull/883)
 - Capture exceptions from Kafka consumer and pass to involved stages [#887](https://github.com/akka/alpakka-kafka/pull/887)
 
-The detailed list of changes is found in [the 1.1.0-RC1 milestone](https://github.com/akka/alpakka-kafka/milestone/29?closed=1).
+The detailed list of changes is found in [the 1.1.0-RC1 Github release listing](https://github.com/akka/alpakka-kafka/releases/tag/v1.1.0-RC1).
 
 This release is compiled and tested against [Akka 2.5](https://doc.akka.io/docs/akka/2.5/) for Scala 2.11, 2.12 and 2.13, [Akka 2.6-M6](https://doc.akka.io/docs/akka/2.6/) for Scala 2.12, and 2.13 and both Akka versions on Adopt OpenJDK 1.8 and 11.
 
-On this release contains contributions by:
+This release contains contributions by:
 
 | Author | Commits | Lines added | Lines removed |
 | ------ | ------- | ----------- | ------------- |