Just got an email from Rockstar Games. No details as of yet, but it lends credence to the idea of a "Streets Of San Francisco" themed 70s setting, perhaps. It's slated to show up in October 2004 on the PS2.
Once the realization is accepted that even between the closest human beings
infinite distances continue to exist, a wonderful living side by side can
grow up, if they succeed in loving the distance between them which makes it
possible for each to see each other whole against the sky.
— Rainer Rilke