I've been downloading for the past 2 hours, almost. Sitting at 92%. =(
The patch brings some cool new things, but not much more to do, really. I figure Ulduar will be fun for a month, or so. Maybe a little more than that, but in a month I bet several guilds will have downed all bosses and the pugs will begin (if Ulduar follows the difficulty level trend that we've seen in wotlk). Dual talent specs is a nice new addition, as well as armor set switching. Paladins didn't really receive any nerf/buffs, as far as I can tell. Death Knight patches are "tl;dr".
I dunno. I'm looking forward to seeing these hi-res armor sets.