I would like to know the known bugs for v9.5 and also v9.6, is there any place where I can check?
I think as a whole the project does a good job of fixing known bugs shortly after they are reported.
There is no official bug tracker (i.e., maintained by committers), for better and worse, though the commitfest application does occasionally track some, though usually those are cutting edge.
If you want an opinion, opting for more than one release behind current on fear grounds is an ultra-conservative position - you might as well minimize the pain and go recent and keep it longer. At this point I'd be asking myself whether 9.6 or 10 is the better choice. Though with a third-party application that runs on top of it I'd probably limit myself to the highest release they purport to support.
David J.
