Valve is committed to bringing Steam Deck OLED 'battery life improvements to the LCD models as well

A post-launch BIOS update will see all the firmware and software improvements of the new version brought to the original Steam Deck.

Valve Steam Deck Review - Reviewed

Steam Deck OLED Price, Features, and Release Date: How to Order the Steam Deck OLED?

Steam Deck Could have an OLED, but I'm Fine with LCD

Valve upgrades the Steam Deck with OLED screen and longer battery

Steam Deck OLED Review

Valve Announces Steam Deck OLED, Says Switch OLED Paved The Way

Steam Deck OLED review: gaming handhelds just got better

Valve drops prices on existing Steam Decks with reveal of OLED version - Dexerto

Valve Steam Deck OLED 512GB Handheld Console