Penumbra Overture to be open source

[Adventurer4Life]

As I understand the GPL licence it means you can do anything you like with it.. including releasing a full commercial game.. but any modifications to the source code must be made public to the community. Also I think this means that penumbra can still be commercial and not become freeware, as the GFX content may not be in the source... it is just the engine.. (I think)