Hi@Sanna
As of now, I'm not aware of an officially published end-of-support date for the Knowledge Management UI16 experience.
There is an important distinction worth mentioning. ServiceNow documentation indicates that the Knowledge Management v3 homepage has been preparing for deprecation since the Washington DC release, with the Knowledge Management Service Portal identified as its replacement. However, that guidance does not specify a definitive retirement date for UI16.
I would recommend treating the transition to Knowledge Center as part of your modernization roadmap rather than waiting for a mandatory retirement date.
Is there a specific feature or functionality you're concerned about, such as the legacy article editor, article management, or another aspect of the UI16 experience? I ask because the transition to Knowledge Center and adoption of the new article editor are separate considerations, and understanding your concerns may help clarify what your organization needs to plan for.
