While Blizzard is generally happy with the way AV is working now, they are looking forward to focusing on tuning Lake Wintergrasp, the new PvP zone in Wrath of the Lich King.
Zarhym says that tuning of the zone will be forthcoming (so beta players should expect to see it soon), and that they’re working right now on a way to balance differences in team populations — since the zone isn’t instanced, team numbers may be very different, and they’re planning to possibly relax requirements to get certain vehicles and goals for the team with fewer players on it.

Our DPS warriors tend to be reliable, solid sources of high DPS. Any fight which allows for high melee DPS contribution, the warriors are always right up there. Last night on Gorefiend, for instance, the kill had two warriors in the top 5, both in excess or 300,000 damage dealt and both close to 400,000. They did this without pulling aggro, despite their lack of a threat dump, because in fact no wow gold one is more rigorous about watching raid DPS and threat and warning people than our DPS warriors.

Another reason I love having the DPS warriors around is because I know they’re good tanks if called to do it. There are fights where you can find yourself needing four or five tanks in some raids, and knowing that after our two ferals and our paladin tank are spoken for we still have people who can respec and do the job is a relief. Also, no one member of the raid is indispensible by necessity: there have been nights when I’ve been too sick to raid or otherwise committed (not many, I try to make every raid, but I’m human) and one of our other warriors has respecced, stepped in and done magnificently.