According to this local article, 8 of 15 teams have been announced for this year's Tour de Georgia - the remainder will be announced after the Tour of California finishes.
the article lists the following:
Astana (Luxembourg)
Team CSC (Denmark)
Gerolsteiner (Germany)
Team High Road (USA)
Team Slipstream/Chipotle presented by H30
BMC Racing
Bissell Pro Cycling Team (USA)
Jittery Joe’s Professional Cycling Team (USA).
the article lists the following:
Astana (Luxembourg)
Team CSC (Denmark)
Gerolsteiner (Germany)
Team High Road (USA)
Team Slipstream/Chipotle presented by H30
BMC Racing
Bissell Pro Cycling Team (USA)
Jittery Joe’s Professional Cycling Team (USA).