I got my STK500 yesterday from AVNET for $79 (pre-order). The lead time is suppose to be end of March but seem like the supply is here. I check Digikey and they quote 3/24 shipping date (instead of April). So get ready for those who are waiting to get the STK500 after a long wait, it might be gone soon.
I'm impressed with the board so far just by looking at it. Well build and a lot of features.