YES. Day two and the exact same thing is happening on my 15" inch. 460 as well but I don't think the dGPU is the problem. Its like a fuzzy, pixilated rainbow bar at the bottom of the screen.
Restarting/shutting down and logging back in. It will do the same thing every time. Any one else having this problem?
Also, I get no option to use Touch ID for signing in anymore. It always says "Your password is required to enable Touch ID" even though Touch ID is already enabled and has my fingerprint. Nothing fixes this. Always have to enter my password manually now.
This stuff only started happening after I shut down my computer for the first time. Also, as an aside, the Touch Bar can be kind of glitchy at times, not coming out of sleep and not showing the correct buttons in context.
Methinks they need to release an update for these MacBooks ASAP.