"The 'trick' to these rumors is not the console manufacturers themselves, but rather the chip makers. All indications from them are that things change significantly (ie next generation) come November of this year. As such, it has been my presumption since the middle of this past year that we would see new boxes in the market for Christmas of 2012." - Inside source
Are we really going to see all three next-gen consoles duking it out on store shelves this holiday season? That could be one epic battle, but I'm willing to bet at least one platform doesn't make it the party.
one thing is to be shown and E3 but another is to release this year
Source