Thats cool news! Together with XNA and WiiWare there's some rumble in the jungle for indies

Though, I suspect a similar model like how Microsoft is doing with XNA: PC development is free, maybe Sony requires a small fee if you are going commercial with a PC title and if you want to recompile for PS3 (e.g., because Sony allows you to develop for PS3 - which is also a hard task), I think you have to negotiate.