http://www.wowwiki.com/Patch_3.3.0
A bit of information on the existing patch notes. I might actually enjoy the random group tool they are implementing. I'm curious about the special loot you could get from completing instances with parties built by the dungeon finder tool. Not to mention the new type of dailies. I will miss the old ones we would pick up normally but randomizing it the way they are going to is just forcing everyone to step up their game but with complete strangers. Added challenge or grief? We won't know until we get to try it.
Lots of rumors are speculating that the patch might apply this Tuesday coming up. To me it still seems kind of soon but then again, blizzard has said that Ice Crown Citadel content will unlock in weekly intervals so they have more time to work on it while we digest the content they gave us in the patch. My recommendation is to make sure you have most of the patch downloaded via the background downloader so you aren't scrambling on patch day to get it then. As always just like all patch days, don't expect to really play right away since the server will have the usual growing pains.