This changelog stops at 2.2.9:
https://www.netxms.org/download/ChangeLog
Where does the changelog live now?
The most up-to-date changelog can be found on GitHub:
https://github.com/netxms/netxms/blob/master/ChangeLog
This will contain things not yet released, since it is from the master development branch.
That being said, the Changelog you linked to should probably be updates as well.
I've updated web site version as well. Will keep it updated during new releases.
Best regards,
Victor