That would be dope, but I doubt it. I remember R* announcing GTA III and Vice City weeks in advance with trailers and everything and interviews about the original games leading up to their iOS releases.Touch Arcade said this might release tonight on the App Store. Are they reliable?
Edit: although, now that I think about it part of all that was for the 10 year anniversaries of III and Vice City. Not the case this year with San Andreas (that's next year) so maybe we will get a sudden release.