What's up with the talk of 2016 already?

[HAnnA MArin County]

I apologize if this thread has already been discussed, but on most of the MSM channels lately I've been hearing the speculation about 2016, particularly as it relates to whether Hillary will run. Nancy Pelosi (whom arguably titled towards Obama during the 2008 primaries) said that Hillary was "our shot," and Ed Rendell seems to be banging the drum having recently said that Hillary would have been better than Obama and that he would manage her campaign should she run in 2016, and Kirsten Gillibrand is allegedly already trying to convince her to run in 2016.

Are Democrats just abandoning hopes of winning in 2016, is there really just nothing else for them to talk about except 2016, or do they finally realize that they made a mistake in 2008?