Marks gonna be top dps again by a mile.
With the change made to Steady shot, BM lost most of its advantage over other specs, and the new talents seems to only help with efficiency rather than dps.
MM, on the other hand had huge dps buffs, regadless of chimera shot, which looks really weak to me. Extremely mana intensive to use and dps wise will probably do the same as arcane shot.
This will probably be my raid build:
7-59-5