9.6 looks like a possibility though. I have big plans for BDR personally, but for various reasons need to lay it on top of a stock postgres.
Yeah. 9.6 is the goal right now, with it built around pglogical and (hopefully) stock 9.6 to make it more maintainable and modular.
If you want BDR on 9.6, help with getting sequence access methods committed, the logical decoding for sequences patch, and/or failover slots would be valuable since they are all going to be important for BDR on 9.6. If you want to use it please help make it happen.