I don't have a timeline (and as far as I know pypy-dev doesn't either), but I do intend to help push this forwards however I can. (I am brand new at this though)

Work is progressing on 3.3. There's no point in trying to immediately work on 3.5, because all changes needed for 3.3 will mostly all need to be made for 3.5 anyway. As always in open source, if you want it faster, feel free to jump in and help. : )