I think they’re expecting to take until the end of the year to work through their current reservation list (this might include the waiting list at the time but I’m not sure). I wouldn’t hold my breath unless you’re willing to pay one of the few scalpers on eBay.

If you’re going with a small form factor DIY or some equivalent pre-built PC alternative, I strongly urge you to get an AMD GPU to get a good experience with Steam OS, Bazzite or some other Linux gaming distro.