I'm getting great results too, got settings on medium, getting 25-55fps in IF, usually around 45fps. It is very playable, and you can get higher (55+) consistently if you use low settings in most situations.
I will say the fan kicks in after about 10 minutes, but no big deal.
I originally played WoW in a 1st gen MBA, and that wasn't working so well. I was able to play it, but eventually it got just a bit too annoying even with every possible trick (Coolbook, fans, etc). I'd be really curious what the 2nd gen MBA does, but I went ahead and switched to the 2.0 Macbook (2GB memory, HDD) and it works great.
I will say the fan kicks in after about 10 minutes, but no big deal.
I originally played WoW in a 1st gen MBA, and that wasn't working so well. I was able to play it, but eventually it got just a bit too annoying even with every possible trick (Coolbook, fans, etc). I'd be really curious what the 2nd gen MBA does, but I went ahead and switched to the 2.0 Macbook (2GB memory, HDD) and it works great.