Some Apple Watch owners noticed a strange gray/green display tint after installing watchOS 9.5, but it's most likely a software bug that should be fixed soon.
Strange Apple Watch display tint after installing watchOS 9.5? You’re not alone
Apple Watch SE 2
Apple Watch SE 2 and a new rugged Explorer model are apparently on the cards for 2022
While 2021's Apple Watch Series 7 will gain minor changes like an improved screen, Apple launches in 2022 reportedly include the next Apple Watch SE along with a new rugged model.