"Asymmetrical" is the word that's really catching my eye here, as well as 'indie games' and 'unity 4'. Sounds to me that Rockstar is thinking about smaller-scale, more experimental type games.
'Asymmetrical' could mean several things. In order of most likely:
-A game for Apple TV/Android microconsoles with phones/tablets
-A WiiU/NX game
-A PS4 game that requires the PS Vita
I predict NX launches in 2017 - not 2016