This will go into 9.4 (or maybe they'll call it 10.0) which will be released September-ish barring no bigger issues.

I think they will reserve 10.0 for when logical replication is done.

This is planned for 9.4 which if history shows is likely late August, but could be anywhere from early August to as late as October.

I wouldn't be too quick to swap it out yet. Especially if you are using replication. I usually wait for a few minor releases before upgrading.