Sadly, I haven't got my hands on a beta key and know very little about how the balance looks in PvE/PvP.
But judging from what it seems, what class is most leaning towards being fotm in 6.0/6.1 in PvE as well as PvP? Or will there not be any fotm?
Don't know if this is impossible to judge atm or if we can have our expectations. Would be fun to know as it almost seem to change throughout the expansion.
And oh, for those unaware, here is the definition:
http://www.urbandictionary.com/define.php?term=FOTM