SharePoint Online Asset Library, Wiki Page, Promoted Links, and Form Template lists now have improved page performance, responsiveness, and accessibility, instead of being limited to classic mode. You’ll begin seeing these updated features in the coming days.
How does this affect me?
Creating modern experiences for these list types brings them in line with many other SharePoint Online elements that have been updated recently, allowing more team sites to take advantage of improved consistency and page performance, responsiveness, and accessibility.
If you wish, you can choose to remain in classic mode for these lists in advance of the rollout by adjusting your settings.
We’ll be gradually rolling this out in the beginning of February, and the roll out will be completed by the end of February.
What do I need to do to prepare for this change?
There is nothing you need to do to prepare for this change. Please click Additional Information to learn more about this feature and reverting to classic mode.