http://store.steampowered.com/app/388210
No price yet though & they confirmed the Maniac Mansion is the PC enhanced 256 colour VGA version.
The DOTT remaster does not look any different/better than running the original game via ScummVM though so if you already own the game not sure its worth the $20 they want for it on Steam as the work put into it looks a little lazy to me!
Agreed and whilst they've redrawn them I don't think there's much gained from this copy over playing on Scumm tbh.