Hi Cigaryno,
I am Dave, I will help you with this.
There is no real information available on 23h2 yet, the one thing for sure is there will be no major new features it will be a small enough update, unlike previous feature updates.
They will probably advise anyone that wants to run insider builds to move to Windows 11, if they want to continue on the insider Program.
There will be the usual notification prior to October 2025 that support is about to expire on Windows 10, but no-one will be forced to move to Windows 11, since many PC's cannot be updated, people can continue to use Windows 10, but they would no longer receive updates, including security updates, and after support ends, it would be advisable to install a 3rd party anti-virus to keep the PC safe.