Oh, my god, I am so relying on my iPhone that I will die as a plant without water if you take it from me. I need to write a sms and post my f*cking breakfast on the instagram, because I won't be able to eat it otherwise. Sad truth is we're getting into idiocracy, turning into mindless creatures looking at the phones all the time. All eras had their drugs: opium, heroine, cocaine, PCP, etc. Apparently we got FB, Instagram and Twitter. Seriously sometimes I don't want to live on this planet anymore.
Present day is what will kill that game eventually. Satire will be getting weaker and the jokes will be forced and not funny. While IV didn't had the best social commentary in the world it was still pretty witty. We got domestic terrorists, influence of russian organized crime, american agenda about soldiers fighting in someone else's war and similar stuff. V got it messed up, Internet is weak and the satire is forced terribly (I didn't find anything real funny there and to be honest the internet felt forced), we got cults, PMCs and corrupted government. Are these the topic GTA should venture in? In my opinion no and since new game will be out in the period on 5 years, we can rely on the commentary being weaker and weaker.
Setting the game in some different era, could help with that. In 3D era only one game was set in the present day (III), while the rest being in the past and only two games were set close to each other (VC and VCS). In HD era two games can work, although the V is much weaker, but I can't see and I wouldn't like to see next game set in present day.