S4 League. Totally under my radar. Anyone heard of it?

So I'm reading my morning webcomics, and I run across this one. Now, I usually know about the games he references in those strips, even if I'd never played them (he did a series of strips on Dwarf Fortress a while back)

I was able to find this at wordpress about the game.

It's apparently going to be an MMO on the PC, and... something else on the PSP. I can't even tell if it's going to be a Japan only release because news on it is so thin.

Has anyone heard of this game? I watched a few gameplay movies and it looked interesting. I've read it suggested that the game is like Quake Wars, but not having played QW I couldn't tell you.