The Raspberry Pi 4 is now available in an 8GB version.
it's almost something I'd want to play with...but I'mma gonna wait until it has proper M.2 storage support. build in WiFi / Bt wouldn't hurt either.
You'd want to use Raspbian, which is based on Debian. There are a lot of different GUIs for Raspbian available. You can also run Ubuntu. Pretty sure those are your only choices currently until/if a uefi is created for the Pi.Can I run Debian on it, so I can get rid of my desktop?
That, it has already for H.265 and H.264HW video acceleration would be nice as well.