I hope those days are numbered for a little while since they made a clean cut on Creation Engine 2. The whole mess of backporting newer Creation Engine versions to older games should be settled.
That wasn't exactly on Todd Howard, though? There was going to be a new update for Fallout 4, and everyone, especially every modder, knew that for at least a year beforehand.
There are 5 other even larger projects in development other than Fallout London, Fallout London was the only one to come out and blame Bethesda for a foreseeable delay.