Valve Software announced the Steam Deck today.
This is a handheld gaming PC comparable in power to a PS4. Shipping OS is Arch Linux but it can be wiped and be replaced with a different OS if you wanted to.
Reservations to pre-order start tomorrow, Friday. I think I will try and snag one. Valve is being smart about it, only accounts which have a purchase history before June 2021 and are willing to pony up a refundable reservation fee can pre-order one during the first 48 hours. This will completely defeat bot scalpers.
I posted this here because even though only IGN and a few others have seen it in person https://www.youtube.com/watch?v=oLtiRGTZvGM, the anti-glare etched glass for the premium model is of interest to me and might be good. We'll find out later!
Edit: And this thing will probably have custom video drivers too which will be interesting.