Welcome to the Supra buying experience. You won't get an accurate ETA at all. Dealers will give you a date but until allocation is given they don't know shit.
No these aren't known until after the fact. It's roughly based on monthly sales. As MY24 have barely started selling yet probably be a bit before there is data.
My friend brought me one back. The underside needs a better design. they kind of float above the cup holders. The material isn't super rigid so forcing it in could bend/ break the foam. A rubber seal or rubber underside would have been better,