Well, I know you are eager from an official reply from the Zorin's but I'd like to point out some of Artyom's comments on this topic. I believe the post in question that you are referring to is this:
I want to mention that the Linux kernel in Zorin OS 17 is expected to be updated to version 6.11 next month or in March, ahead of the launch of Zorin OS 17.3.
In a different thread, however, Artyom explained that Zorin OS uses the HWE kernel version. This comes and is updated by Canonical, and the latest version of which is at 6.11 (released October 2024):
The HWE kernel series will continue to receive updates and security patches for the life of the OS, until at least June 2027.