Overall, not too bad, especially in comparison to some of Nike's atrocities. My only complaint? The introduction of black into the color scheme (as a thin border around the numerals). Overall though, thumbs up.
Will be interesting to see if the pants get the same piping. Most important will be to see them in a game under lights.
Updated 8/12/09: These are confirmed as official. Poll results show about two-thirds of fans dislike the new unis.