Valve knows people will jam the shiny new OLED panel into old Steam Decks 'but it's probably not going to go well'

Valve Steam Deck OLED handheld PC.

If you have anything like my tinkering soul, the first thing to occur to you the instant you heard Valve was making a Steam Deck OLED was about whether you'd be able to buy the screen from iFixit—in the same way you can buy the top LCD Steam Deck panel right now—and drop it into an original Deck. 

Sadly, it looks like that's not going to be a thing… but that's obviously not going to stop people trying.