Valve Source on Linux

So todays big nerd proggy news is that Valve is porting their Source engine to Linux. Wow. This is great. I'm a *nix fan stuck in a Windows world by 2 traps: my dev suites and games. With Id Software and Valve putting out Linux clients, I don't see how this isn't a win. Lets just hope that Epic doesn't get purchases by M$ or we'll never see that UT3 linux client.