It sounds like the initial roster for the next "Team USA" has been set, and will be officially announced this weekend by Jerry Colangelo.
ESPN has the list of names from league sources, and this is how it is shaping up. Keep in mind, this will be pared down to a normal 12-15 man roster eventually:
Carmelo Anthony
Gilbert Arenas
Shane Battier
Chauncey Billups
Chris Bosh
Bruce Bowen
Elton Brand
Kobe Bryant
Dwight Howard
Josh Howard
LeBron James
Antawn Jamison
Joe Johnson
Rashard Lewis
Shawn Marion
Brad Miller
Chris Paul
Paul Pierce
Michael Redd
Luke Ridnour
Amare Stoudemire
Dwyane Wade
Interesting mix of players, but lots of talent. It seems like they are trying to build a better team this time around, and I really hope it works. Also, here are the players who reportedly declined invitations for various reasons (weddings/babies/injuries/etc.):
Kevin Garnett
Jermaine O'Neal
Vince Carter
Ray Allen
Jason Kidd
Tracy McGrady
Richard Hamilton
Tayshaun Prince
Ben Wallace
Also, its said that Shaquille O'Neal has a standing invitation if he wants to join the team. Three more players (collegians/high school) are expected to be added to the training roster, with Adam Morrison (Gonzaga), J.J. Redick (Duke), and Greg Oden (Indiana HS) as the leading candidates. Anyways, more at the linky if you're interested.