So it Looks like Microsoft has finally announced what it's Exclusive DLC deal w/ Rockstar really means, according to Microsoft each episode of DLC content will be equal to the games San Andreas and Vice City for Ps2/Xbox. They have also stated that Digital Downloads will be the new way to deliver the GTA "Expansions."
So it looks like with this new announcement if you were planning on playing the Vice City/San Andreas versions of GTA IV the 360 is the Definitive version to get, with the first expansion arriving as early as Fall this year and the next one to follow-up in 2009.
* When MS says exclusive, they mean that no other system can have DLC content for GTAIV
* It will be bigger than a lot of people think. GTA3 Vice City and San Andreas were basically expansions of GTA3. Think of the DLC that way. We are talking major expansion for GTAIV
* No price has been discussed yet. It's up to Rockstar on whether or not they will charge for it
* If successful, DLC may be the new way to deliver GTA expansions