Has anyone else noticed the new foundry drop-down menu in hammer? According to the VDC page its used for editing entities in already compiled maps or something. I cant get it to do anything at all, does anyone else have any more information on it?

Edit: Also, does anyone know what the manifest options in the instance menu are for? It seems to convert the whole map into a .vmm file, but for what purpose i really have no clue..

Foundry won't do anything. From what I've read, you need foundry.dll to make it work. Without it, Source gives you "not in foundry mode" errors.

I heard it was some sort of editor leak found in the Alien Swarm SDK which currently does nothing.
I guess we will find out later on.