Hi, Everyone, We have fixed a few critical bugs since 0.9.0.0 was released and are still investigating a few more issues. The current list of issues tracked for 0.9.0.1 can be found below. Among them, only KAFKA-3159 seems to be critical.
https://issues.apache.org/jira/issues/?jql=project%20%3D%20KAFKA%20AND%20status%20in%20(Open%2C%20%22In%20Progress%22%2C%20Reopened%2C%20%22Patch%20Available%22)%20AND%20fixVersion%20%3D%200.9.0.1 Once all critical issues are resolved, we will start the release process of 0.9.0.1. Our current plan is to do that next week. Thanks, Jun