It's been about two months since 2.5.7 and 2.5.8 has 42 completed issues ( https://issues.apache.org/jira/projects/HBASE/versions/12354047). Looks like we are due another 2.5 release.
I plan to spin a release candidate toward the end of this week and submit it for voting next week on the Monday. If you have any pending work you'd like to get in, please commit it now. If you need help with review please let me know by responding to this email. Best, - Andrew