Im in a same situation >< im a student and i want to upgrade to a full frame camera for this summer cuz i will be doing a lot of traveling and i love photography..so saving up 2-3G is a lot for me. I was hoping that they will announce the spec by the beginning of the year so i can decide if i want to buy a 5DMark2 or 5DMark3
Hopefully they will officially announce it before may =D
I have a 5D MK II and love it, but for traveling, weight is important, and so are lenses. I'd recommend that you consider the package as a whole, lenses, body, flash, extenders, figure out what you need. You will get more milage out of a T2i/ 60D plus good lenses than a 5D MK II and no money left for good lenses.
Good lenses do not need to be "L" lenses, but determine what you need in advance, since the lens part can cost 3X the camera body.