It’s new so reviews are just filtering out but it’s starting to look like SteamOS powered version of the Legion Go S (Z1 Extreme version) is a pretty great handheld that uses the latest AMD chipset with a sizable assist from Linux/proton efficiencies vs Windows to drive a 15-30% performance improvement which does make some more modern games more playable though it is significantly more expensive than the deck. I watched Retro Games Corps review of it yesterday. That said, if you’re okay waiting another couple years or so I bet there will be a Steam Deck 2 release but it seems like it mainly rests on AMD to deliver a significant (“generational”) leap with upcoming mobile APUs. Valve seems keen on not releasing a follow-up to the first deck until it is significantly better in every way and the chipsets available now just aren’t quite there yet it seems.
Not to mention battery life…