Package update-kernel: Information

This package contains a script to conveniently update kernel and
modules.

It operates by installing a new package set in conjunction with your
existing kernel, ensuring that you do not lose the ability to boot your
reliable old kernel. By default, it searches for the most recent package
of the same flavor (e.g. "std-def") and aims to install all the same
modules that are already installed for that flavor.

This is recommended way of upgrading kernel for ALT Linux.