I'm rather surprised no one has captured a picture of a 7D2 at the World Cup yet---if they're really there!
As speculated in the neighboring thread about pre-production models, the earlier incarnations are most likely inside the old camera body so you won't recognize the 7d2 from the outside.
People who deride
P mode are idiots
Fyi Magic Lantern users: There's a module called "autoexpo" which is essentially P mode, but it lets you pre-set av/tv/iso for every lv value. Afaik it doesn't support shifting (yet) and doesn't take the lens' focal length into consideration, but if you exactly know what settings you want for what available light I'm reading it's very useful.
To quote two very famous and widely regarded wedding photographers, Yervant and Jeff Ascough (the main input who directed Canon to spec the 5DIII). Yervant uses P all the time, Jeff uses M all the time.
Both are highly regarded, but I know who's photos I prefer.
Another great photograher who I have a lot of time for is Guy Edwardes. He's a M user, with the occasional Av use. Go check out his diary page for some of the finest landscapes, flowers and wildlife I've yet to see.
Personally I see little use for P, my default is AV with exposure compensation applied. But I know many other pros who feel the same about M, once fully mastered, there is little reason to have any other mode. My personal view is that Av or Tv is faster to operate and less of hassle in environments with constant lighting changes / challenges. Another useful feature of M is that it can be used as an "Iso Priority" (Iv?) mode if "Auto iso" in engaged. Not my bag, but I've used on the odd occasions.
As for Ken Rockwell and his "P is for professionals" comment....yeah right....becareful of what you read on the internet....especially if the advice is for free? I certainly wouldn't go on one of his workshops.