We didn't get chance to wrestle with Kid Icarus: Uprising at the 3DS event in London as the game's still being feverishly worked on behind the scenes, and a recent interview with GamesMaster Magazine reveals the game's online modes are still taking shape.
Masahiro Sakurai: The online capabilities are currently being tested. There could be some versus play but we can't go into the detail. As far as going forward, there are lot of capabilities that expand on what was in the DS that people are taking advantage of.
A typically cryptic answer from a seasoned Nintendo developer, particularly the tease that the machine's expanded capabilities will feature more heavily going forward, but we'd expect nothing less from the new console.