Hello Anas El HajjajiI,
Usually the latest two Android versions for a given board are still supported by NXP, but this does not include further updates and patches.
As you can see on the link below, there is usually a couple of Android BSP releases per Android version, but there is not a constant update schedule. You would need to rely on Google’s updates to keep your Android current.
https://www.nxp.com/design/development-boards/i-mx-evaluation-and-development-boards/android-os-for-...
As for when the next Android BSP will be available, there is not a public roadmap or Android releases but your NXP FAE might be able to provide more insight in this regard.
My apologies for the inconvenience.
Regards,