I don't see any mention of VR. I wonder if they will support plugging in a Valve Index. Seems like it should be possible through the dock. Oculus headsets wouldn't work though, since they don't support Linux. Unless you can install Windows on this thing somehow...

Edit: Yes you can install Windows: https://partner.steamgames.com/doc/steamdeck/faq This might be a good companion for an Oculus Quest headset. $299 for Quest plus $399 for this and you get access to the Steam library of PC VR games in addition to the Quest library.