I got a x570 Tomahawk a week or so ago from OCUK. Said 10+ in stock, just checked, still says 10+. Thats probably one of the most popular boards around Id guess.
I also got myself a Gigabyte Aorus Master and an Aorus Pro (family build), I got them early anticipating stock issues. May have been unnecessary but the way things have been recently I didn't want to risk it. Just means I have slightly shortened my usable warranty.