Basically, a few Rockstar studios have started post want ads, more or less. Some point out that they want someone to work on a open-world game and this is taken as GTA 5 by most. I'll wait and see before getting my hopes up. Honestly though, as much as I wanted to play it, GTA 4 could have used a bit more development time to get so of the glitches squared away. Great game but really pissed me off due to random crap happening.