Masahiro Sakurai hints at potential a versus mode, as well as the use of 3DS features that extend the features of the original DS.
http://www.nintendoworldreport.com/news/23675
In an interview with the UK magazine GamesMaster, Project Sora director Masahiro Sakurai indicated that his latest project, Kid Icarus Uprising, might feature online play. Revealed during Nintendo's E3 media briefing back in June, the 3DS title is the first for the Kid Icarus franchise in two decades.
In the interview, appearing in the September issue of the magazine, Sakurai mentioned that his team was testing possible implementations of online gameplay. He stated that, "There could be some versus play" but did not elaborate, only noting that the 3DS had a lot of functionality that expands the capabilities of the DS that "people are taking advantage of."
which lesson will they learn from brawl online?
1) It does not matter how bad quality and broken online is, the game will sell regardless.....
Icarus doesn't have as rabid and mangy a fanbase as smash bros, give me a break. That they're considering online for a game like this a good sign.
I think Brawl was a game that was too fast, with too much going on to work well online...but they tried anyway, and it was foolish....
I like to hear things like this though. What he is essentially saying is "The 3DS has so many online features, of course we are looking for ways to utilize them."
Sounds good to me. Here's hoping for an achievement clone/rip-off. :)