a newer version of the android market already came out...but was stopped for some reason. i downloaded it through a different site. not sure if this is the new one youre talking about or not. to be honest i liked the old one better. but with the newer one you can buy movies and books it seems. what version do you have currently?
for some reason it stopped getting pushed out to phones a lil while back. unknown why. even trying to update wouldnt show that it was even there. i heard a few different reasons why but as usual they were just rumors. i ended up having to go to that site to get it.
This is a wild guess on my part, but based on complaints I was seeing in user reviews on the new content in the new Market (movies, books, etc.), I think Google decided to pull it to work on bugs. Some people were able to purchase content and THEN discover that their phone would not install the associated media player/reader on their make & model of phone.