Rock Pi-S Debian Image with Upgraded Kernel


Is there any update/progress/work happening to release the Debian images for rock pi-s with updated kernel version?

The latest debian image on the downloads page has kernel version 4.4.143 which is very old from 2016 and is missing out important updates.

Is there any possibility to custom build a Debian image with updated kernel version? Has anyone tried ? What are the challenges ?

Any help would be appreciated. Thank you!