I assume the new fork is still 31.8 mm in diameter? I was thinking about mounting a Canyon gear groove cockpit. But I guess thats not possible.
??
New fork should have a standard 1 1/8" steerer, like the other fork option; Canyon is the one with weird standards but even they went with a 1 1/8" steerer on the new Grail, so their cockpit should work just fine.