Depends on if Wesp is willing to take the time to show me what he fixed, if not then it will include 6.5 like it does now.
Edit: After looking closely at Wesp's 6.6 patch I really didn't find any necessary "fixes" that needs to be in CE 1.2. The stuff that he "fixed" are not broken in CE 1.2 and the rest of the stuff were just his personal preferences.
So at this time I don't see the reason to break apart CE 1.2 (and possibly break something) to merge it with 6.6.