Earlier today Blizzard posted a preview of Ulduar, the tier 8 raid coming up in patch 3.1 (which they promise will be on the PTRs "very soon"). Most of it looks really cool - 14 bosses, massive rooms, hard modes. However, there is one topic that Blizzard enthused about that really worries me: vehicle combat.
We've already seen some vehicle-based boss fights in Eregos (the final boss of the Oculus) and on the third phase of the Malygos fight. But Ulduar is, apparently, going to take it one step farther: there will be a vehicle-combat gauntlet leading up to the first boss, Flame Leviathan, and that boss itself will also be a vehicle fight, with players picking among three vehicles (Chopper, Demolisher, and Siege Engine) to command.