Yeah I think their alert system sucks or something. Manual checks on that, microcenter, and best buy are probably your best bet for any new releases going forward.

Edit: I bought an Intel one, 250$ or whatever it was, been very happy with it

Not sure where you are in the world, but I got a B580 from b&h in February without issues. Just checked the site once a day when I knew I wanted to buy one.