Seed Studios revealed that it will include Motion Controller support, but unfortunately new features take more time, and thus the developer has pushed the game to Spring 2010.

Under Siege currently supports some cool things like:

• Native 1080p (not upscaled )
• Replay recording with option to upload to YouTube
• Motion Controller support
• Splitscreen for Co-Op and Competitive
• 4 players online
• Video and voice chat in game and on lobby (with tiny windows on the corner!)
• Photo Mode (WipEout we envy you…)
• Custom Soundtracks

And off course a full blown in-game editor where you can:

• Create your own level (single player, multiplayer) or a full campaign with your story
• Use the same tools that we used to make the Single Player Campaign
• Upload it all for everyone to see (and make us sweat with the all the wrong possibilities that a tool like this provides)