[paraselene_]

This was their original announcement article https://news.samsung.com/global/samsung-sets-the-new-standar...

This is their current security update list (not os updates) https://security.samsungmobile.com/workScope.smsb

"... And select devices launched in 2019 or later will be supported with firmware security updates for a minimum of four (4) years following their global launch, while select newer devices will receive up to five (5) years of security updates."

It's a good start I'd say, considering that Samsung is a major player in the android phone space.