I've started an informal channel "#python2.8" on freenode IRC. It's to discuss the potential for a Python 2.8 version -- to see whether there is interest in it, what it could contain, how it could facilitate porting to Python 3, who would work on it, etc. If you are interested in constructive discussion about a Python 2.8, please join.
I realize that if there is actual code created, and if it's not under the umbrella of the PSF, it couldn't be called "Python 2.8" due to trademark reasons. But that's premature - let's have some discussions first to see whether anything can happen.
Hope to see you there for some discussion!