Update README for v4 beta release.
src="https://scan.coverity.com/projects/15543/badge.svg"/>
</a>
-## ***** NOTICE *****
-This repository is moving to a new branching system. The master branch will now contain bug fixes/features that have been minimally tested to ensure nothing major is broken. The release branch will contain new releases for the SDK that have been tested thoroughly on all supported platforms. Please ensure that you are tracking the release branch for all production work.
+**We have released version 4.0.0 beta 1 of this SDK on the [v4_beta](https://github.com/aws/aws-iot-device-sdk-embedded-C/tree/v4_beta) branch and encourage everyone to give it a try.**
-This change will allow us to push out bug fixes quickly and avoid having situations where issues stay open for a very long time.
+Version 4 is a new design, and therefore **NOT** backwards compatible with version 3.0.1. We will continue to fix bugs in v3.0.1 even after v4.0.0 is released, but we may not add new features to v3.0.1.
+
+Please be aware that v4 beta may have bugs and performance issues. Additionally, there are currently missing features compared to v3.0.1. See the [README](https://github.com/aws/aws-iot-device-sdk-embedded-C/blob/v4_beta/README.md) on the v4_beta branch for more information.
+
+## Branches
+
+### Master branch
+The master branch will now contain bug fixes/features that have been minimally tested to ensure nothing major is broken. The current version on the master branch is v3.0.1. Eventually, we will move v4.0.0 to the master branch and move v3.0.1 to a legacy branch.
+
+### Release branch
+The release branch will contain new releases for the SDK that have been tested thoroughly on all supported platforms. Please ensure that you are tracking the release branch for all production work. The current version on the release branch is v3.0.1. Eventually, we will move v4.0.0 to the release branch and move v3.0.1 to a legacy branch.
## Overview
