A quick note that bbPress.org has been updated to WordPress 3.8. bbPress 2.5 is fully compatible with this latest and greatest WordPress release, so you can update knowing that your bbPress powered forums will continue working as normal.
We’re also currently working on some performance improvements to bbPress for 2.6. If this sounds like something you’re interested in, check out the discussion on our Trac, maybe test a patch, and drop in some feedback if you have any.