Mass Effect 3 release?

I know it's coming out winter 2011 but where are all these websites getting their dates from?

http://www.asda-entertainment.co.uk/games/platforms/xbox-360/mass-effect-3/10293230.html - 26th August

http://www.shopto.net/XBOX%20360/VIDEO%20GAMES/XB2MA26-Mass%20Effect%203.html - October 7th



It's annoying :(

Also, when will the collector's edition be announced and roughly how much do you think it will be?Mass Effect 3 release?
They try to guess, but later will try to correct themselve.

I think there is going to be collector's edition for $70Mass Effect 3 release?
dates are based on estimates but the real release date will be announced by EA/Bioware later in 2011 and most likely there will be a collectors edition my guess is between $70-90Mass Effect 3 release?
They're guessing. A Bioware rep said that they will be the first to announce a release date but they haven't decided on anything specific yet.