The trio has experience from the Command & Conquer RTS series, so their first project might be strategy related? It's for digital stores.
Right now there's no buzz on what the game will be coming from Supergiant, only then it will be available on downloadable platforms - though they're yet to be specified.
"We’re working on a game for digital download platforms that we hope to release in 2011," blurbs their website. Right now they're looking for a 2D artist to join their ranks.
Source: Big Download