Pretty much every touted feature is WIP, definitely all the important ones. So yeah no that's vaporware.
Aha, I took their marketing at face value. I never learn... :(
Does the Doom demo actually work? That'd be enough for me to call it "not vaporware" by a longshot.
The magic porting of C-Doom to V-Doom is still WIP
IIUC they use chocolate-doom that has approximately 600 .c files, and replace one of them with a .v file. I don't understand what they mean when they say
> DOOM translated from C to V. Builds in 0.7 seconds (x25 speed-up).
Check out some of the discussions from its announcement and early release from last year. There were a lot of statements that were (or at least seemed) false, and several delays in releasing source code (which increased people's conviction that it wasn't entirely legit).