Not truly "out of support for a while" -- it was fully supported right up until a couple months ago.
I was worried that Apple was going to discontinue support for my early-2015 13" MBP after their new Mac announcements in the late Oct 2023 event, so I took it to the Apple Store in Sept and had them replace the battery which had been needing service for a while.
It's stuck on macOS 12 Monterey, but got a macOS security update in Oct (possibly its last) and a Safari update just over a week ago.
I was worried that Apple was going to discontinue support for my early-2015 13" MBP after their new Mac announcements in the late Oct 2023 event, so I took it to the Apple Store in Sept and had them replace the battery which had been needing service for a while.
It's stuck on macOS 12 Monterey, but got a macOS security update in Oct (possibly its last) and a Safari update just over a week ago.