Tursi has been working on the GROM side code. That code is a work-in-progress dependent upon his available time, so it may be much later in the year before we see it (he has been very busy lately, and I'm just really glad he likes this idea enough to keep it in his project list). Note that earlier versions of the code on his site don't work with this board, due to some pin change requests on his part.
We've got most of the detailed board documentation done (Jon/Tursi/Jim), though it may still change a lot as testing progresses.
Here is a picture of the most recent prototype: