It's coming out a little later than the regular Escalade, and should be right along with the EXT--think mid-summer.
And to the comment about Mexico--get a life, and move on. So what if that's where it was assembled? It's still an American truck through and through. Furthermore, the Mexican-built '02 Avalanche we used to have was better built inside and out than our current Wisconsin-built '04 Suburban--something that seems to be quite the norm if you go comparing the same trucks but from different plants on a new GM lot.
Get over it.