I am waiting for GB3 R3 english version, to be released 3 May. Ordered for PS4 and Vita, as I like the cross-save feature (i.e. play on vita, then upload to game server, and continue on PS4)
Been playing GB and GB2, so basically GB3 is very similar, i.e, make a cool robot, smash/shoot other robots, collect loot, make existing robot even cooler/more powerful, rinse and repeat. Sounds boring, but in reality, can be very addictive.
GB3 resource:
http://www.neogaf.com/forum/showthread.php?t=1192892