Take-Two has announced an expected American release of Grand Theft Auto: San Andreas on October 19th. Following the tradition of it's predecessor, San Andreas will be revealed to the gaming press in June, so expect much more information then.
Red Dead Revolver's release was pushed back a week into early May. Meanwhile, The Warriors, originally planned to ship in late summer, is now targeted for a winter release. Both delays are speculated to have been caused by financial reasons.