The current status of the L4D1 version is:
Maps one to three are fully playable and basically done apart from any bugs I find during playtests. Map four is layout complete, and all the detailing & scripting is done apart from the finale area.
So basically, it's almost done... :D
In the meantime I've uploaded about two-dozen pictures, which you can find in the media section.
Great to hear. :)
Goooooood! this campaign looks great, I cant wait to play!