The release branch for M3 is release/1.0.0-incubating.M3. Check it out and see if there are any issues we should fix before creating the release.
I will create a release candidate on Tuesday and start a vote if there are no outstanding issues with the release branch. Link: https://github.com/apache/incubator-geode/tree/release/1.0.0-incubating.M3 Thanks, -- ~/William