I just hope this one won't run like stuff on even the highest end pc, it better have a proper addon system as well where addons are sorted by category and have a backup for when the workshop goes down, or better yet make it so if a addon is taken down it isn't deleted from you pc.
He's probably not going to call it Garry's Mod 2 because he wanted people to stop abbreviating it gmod and that got them into legal trouble with a company called gmod.
I have no loving clue what it would be called, something about building, modding and scripting along with doing anything you want with existing or new source stuff.