I didn't see a recent thread discussing the track development so here's another one if there have been many before.
My friend Kevin McCauley paid a visit to the COTA location recently and wrote a report on his visit that includes 19 photos of the ongoing construction. Click the pic below to read/view more.
Looks promising to me. I won't be in Austin this year while they work out all the kinks, but I'd like to go in 2013, I think.