This is the OFFICIAL US Dreamcast release schedule from the Babbages computer system. All games are priced at $49.99. Thanks to DC HQ for the info.

9/09/99:
NFL Blitz 2000
Hydro Thunder
NBA Showtime
MK Gold
Ready 2 Rumble Boxing
NFL Football
CART Racing
Sonic Adventure
VF3tb
Street Fighter Alpha 3
Blue Stinger

9/30/99
Power Stone

"October"
House of the Dead 2
NBA Basketball

10/15/99:
Soul Calibur

"November"
Marvel vs. Capcom

11/30/99:
Resident Evil:Code Veronica

12/15/99
McGrath Supercross 2000