sharing what i've heard regarding funding for 2013 -
from what i've been able to glean from the interviews, it sounds like some programs are planning to fully fund for at least the first two years (tuition, insurance, stipend), and then students are expected to find a group to work with or obtain a dissertation fellowship to continue the funding.
i have a good friend at UNC epi who has full funding for her entire program, friends at hopkins that struggle to constantly find funding, and a very mixed bag of funding from those I know at Columbia (T32 teaching grants to completely supported on investigator grants).
i'd be happy with two years of full funding with option to work for a research team for the rest of the support.