I think the main character is the original from GTA 3. They just released that 10th anniversary trailer and the narration sounds like that of a older gentleman. Also they it appeared that they showed shots of a man in a business suit a a man with similar gray hair exiting the van with the others. I think we are getting Rockstars take on middle age (suspecting because Smugglers run and Midnight Club came out in 2000 and seemed to be the basis for the tech in GTA 3 and the time between then and now is long enough for the whole team from then to be in their 30's and 40's) Hopefully they deliver a serious story about this without the shlock of San Andreas and the buddy system of 4. Hopefully there will be no child rearing though.