Super 3G is the next generation of wireless data service network being developed by the big cell phone carriers to leapfrog over the still-in-development 3G service.
Kind of putting the cart before the horse. Carriers should be instead be thinking of how to drive more data usage on the current 3G network deployments instead of thinking too far ahead for 10x speed improvement over 3G. J2ME multiplayer/online games and streaming video could be the drivers for 3G and Super 3G, but not without help. The 3G/Super 3G carriers can potentially get caught with overcapicity (like the telcos with all the optical networks build-outs in the late 1990s) and go bust. So, when was the last time you looked at streaming video on your cell phone? It ain't happening a lot, even on fully deployed 3G networks. Voice and text messaging are still king and that doesn't need 3G nor Super 3G to do.
The wireless carriers better invest more in J2ME and video content (in order to make these big fat pipe wireless networks get properly utilized) or they'll meet the same fate as WorldCom, Nortel, and others.