So, what have we learned?
- The protagonist's name
*might* be "Jimmy", as vehicles (some old ones, some new ones like the "seinove" and "furzen") are listed as "Jimmy vehicles" in handling.dat. "Jimmy" might also for example be a mission giver, or just a codename for something, or random.
- We *might* be able to explore more of the countryside
than Rockstar told us before, possibly with snowy areas (like mountains or indoor stuff) where we can go skiing, drive skimobiles and other such vehicles or go bobsledding.
- There are many new
(or at least, unknown) vehicles
listed along with many that clearly belong to GTA (IV).
For example, there's the Andromeda, the Dodo, snow vehicles and skilifts, monorails, new planes and helicopters and possibly fishing boats, though they might belong to Max Payne.
Then there's mention of many new cars, Rhino tanks, 5 new motorbikes, bmxs, mountain bikes, quads, trains and a fighter jet, probably the one from Trailer I; however, fighter, quads, bmx and bikes seem to be in IV's handling.dat too.
- Then someone discovered there seems to be "snowing" weather
, though that might belong to MP3. More on skiing and snow in this post
... and probably much more which I can't remember right now.