The world of Android and its open source philosophy allows ROMs like LineageOS to be released for older smartphones. This is based on AOSP and incorporates all the innovations that Google has built into its system.

This ROM was developed at the same time as the latest Android versions and has now reached a new level. LineageOS 20 has arrived, and with it comes Android 13, thus opening the door to this new version for many smartphones that have already been abandoned by manufacturers.

Android 13 has also arrived on LineageOS
Custom ROMs are how many smartphones ensure updates and news after brands fail to create the necessary fixes.  Created and maintained by many volunteers, who are dedicated to bringing what's new in Android to many devices.
LineageOS is not the only proposal, but it is one of the most used and most developed over the years.  This follows what Google creates and transfers to its releases everything new in this system.  This can now be seen again, with the arrival of LineageOS 20.

More than just news from the Google system
This new version arrived on the first day of the year and brings Android 13 to the ROM and everything Google has built for its operating system.  It adds more news and improvements, mainly focused on security and privacy, in order to protect users. 
In addition to these obvious improvements, the applications in the ROM also receive the updates that have appeared.  It should be noted that Google security updates are already included in this version, and therefore it is fully protected.  List can be all news Show here.

ROM supports older smartphones
In addition to these novelties that LineageOS brings to your Android device, there is also a new application dedicated to photography that will change a lot.  This abandoned the previous API and now uses CameraX, more modern and complete.  With this novelty, there is support for additional cameras and more controls.
With the release of LineageOS 20, the list of supported smartphones also appears.  The list is extensive and not limited to the latest models, and can be referenced here.  Installing this ROM is not a complicated process and there are also many guides for everyone Supported equipment.