I really hope it isn't another VR headset.
I was an early Kickstarter of Oculus from back in the CV1 days, and I've owned several VR headsets, including the Valve Index, and after a few weeks, all of them are just put back in their packaging to collect dust.
With the exception of the Meta Quest 3 all of them are cumbersome, and all of them (including the Quest 3) are a pain to use for long periods of time, and the games just aren't compelling. I'm sure I'd feel differently if I were into sim racing or flight sims.
What I'd really like is a full release of SteamOS that will work on Desktops (similar to Bazzite) with full NVIDIA support. A new Steam Controller would be cool too. Even cloud-streaming of your Steam Game collection to your Steam Deck (allowing it to play games that can't run on the deck) would be cool.
Really, I'd be cool with anything but another VR headset.