Say goodbye, Rochelle

The news from Kotaku is that the L4D2 SDK (release date unknown) will have additional functionality, allowing for a broader range of custom content.  In particular, modders will be able to inject user-created models for the survivors, the (un)common and special infected, and all the weapons.

I'm guessing the SDK will also allow you to import character models from other Source games, so expect to see Coach, Ellis, Nick, and Rochelle unceremoniously dumped in favor of Bill, Francis, Louis, and Zoey within weeks of the SDK's release.  And I'll give you dollars to donuts that Alyx Vance (one version or another) will make her way into the L4D universe before long.

Kotaku speculates:

What does this mean to you, the Left 4 Dead 2 PC player? Well, a whole lot more than just Nude Zoeys, I'd bet. Maybe nude jockey-Zoeys hybrids? It's a start.

Inevitably, it will be called the "Sit on My Face" mod.