In a recent interview, Valve stated that they are looking into improving the Steam Deck further, including the Steam Deck 2.
Steam Deck Teardown: Everything Valve Said Not to Do!
About Dexerto: Editorial staff, standards and policies - Dexerto
Steam Deck 2 could arrive as late as 2026, Valve doesn't see it launching in the next couple of years
Valve: don't expect a faster Steam Deck 'in the next couple of years' - The Verge
You'll have to wait a long time for a Steam Deck 2, steam deck
No Steam Deck 2 For A Little Bit Longer, Says Valve
Steam Deck SSD installation: How to upgrade your storage drive - Dexerto
Steam Deck SSD installation: How to upgrade your storage drive - Dexerto
Valve Offers Peek Inside the Steam Deck, Explains Why You Shouldn't Open It
Steam Deck 2: Leaked specs, price & benchmark speculation - Dexerto