Originally Posted by
Nordal
4.3 will probably not be a raid at all. 4.4 will, 4.5 won't, and Deathwing will be all the way in 4.6. There won't be a sunwell/ruby sanctum because they're spreading out raid content more specifically to avoid that problem, if there's a reason for them to do that at all.
4.3 will probably be new features, rather than new content. Maybe a couple five mans.
That said they've already stated they're doing a COT raid this xpack, so that's what we're getting in 4.4. The big bad will likely be whoever is -really- in charge of the infinite dragonflight, as he makes an attempt to erase Deathwing from history. The justification for defending him will be the same stupid justification for defending Arthas.