It also says that it has 1700/2100 band on the box that it will ship.

Well in this picture they show that it is 3G.
http://www.boygeniusreport.com/wp-content/uploads/sonyericssontm506.jpg

Great, now they need to bring it out to the rest of the nation so we all can enjoy it.

What is going to happen is that if Sprint wanted to issue debt such as bonds, they would have to give a higher rate of return to those taking on this debt. This will lead to lose of revenue since it is going out to bond holders so their stock prices will fall. It is a very bad situation that the housing markets has fallen into because of risk they have taken on, and righting off the losses. I really haven't been keeping up to what Sprint has been doing to get them in this situation but I don't know if the government is going to bail them out like they did with Bear Stearns. Maybe T-Mobile will play that roll if they buy them out.

Would this quad band hsdpa be the same as the Xperia. If so then it would be able to possible run on T-Mobile's USA 3G network.

Cellphonesignal has a post on a phone that is GSM/CDMA 1900/850

http://www.cellphonesignal.com/t-mobile-phones-accessories/3223-weird.html

How many customers does Sprint have? I know T-Mobile has around 30 million. If Sprint has around 50 million it should move T-Mobile to the #1 spot in customers.

I don't know how this is more important than T-Mobile launching 3G voice and DATA today in New York.