Easiest way to start is to look at the 2011 team.
Matthew Centrowitz - looked good indoors
Leo Manzano - won indoor USATF and has already posted a 3:55 mile outdoors
Andrew Wheating - snowball cross training and fastest PR
Also has 'A' standard:
Lopez Lomong - Good 800 and 3000 indoors. Adjusted to new coaching
Could someone make the team that is not in this list of 12?
I left Lagat out since he didn't take his 1500 spot last year but there is a chance something goes wrong in the 5000 and he takes a 1500m spot. He did have the fastest US 1500m time last year.
Right now I would say Centro, Manzano and Lomong for the team.
We'll see how things go leading up to the Trials.
There will likely be some upset who makes the team.