Check whether your device supports Project Treble and Seamless System Updates

Project Treble:
Supported: Means your device will receive faster Android OS updates and patches.

Unsupported: Means your device should receive minor system updates and patches only. Expect same pattern of updates you're receiving now.

Seamless System Updates:
Supported: Means two system partitions slot A and slot B hence A/B. So benefits are smooth update and fallback if something goes wrong.

Unsupported: Means there is only one system partition. No extra reserved space.