My advisor (who's signed up as a reviewer) got word that they have to get through all their assigned applications by Sept. 2, after which there are a few days of web-conferencing to discuss the merits of each application. After that, I think the apps have to go back to the EPA for further evaluation. I would guess that means we wont here back until late September.
Based on the delays, I'm hoping that they allow us to defer the start of the fellowship until the following fall. I have to make arrangements for other sources of funding before we hear back about the STAR, and I assume other people are in the same boat. Given that the acceptance rate is going to be 3-4%, it would be crazy not to!