It's entirely possible that my French is failing me (it's been a while since I studied it, and it might be getting rusty), but as far as I can make out, this blue post on the French customer support forums claims that patch 3.2 is coming "next Wednesday."
This is in the course of answering a routine question about where to get patch files and so forth - a surprising place for a patch release date confirmation, but I'll take my info where I can get it.
I'm not sure whether "next Wednesday" ("mercredi prochain" in the French) means August 5 (in which case the North American realms would get the patch tomorrow), or whether it means August 12 (in which case we'd get it the 11th), but I'd lean towards the former. So get your ducks in a row, faithful readers, and get ready for the Call of the Crusade.
Patch 3.2 will bring about a new 5, 10, and 25 man instance to WoW, and usher in a new 40-man battleground called the Isle of Conquest. WoW.com will have you covered every step of the way, from extensive PTR coverage through the official live release. Check out WoW.com's Guide to Patch 3.2 for all the latest!