MC239264 – SharePoint pages will soon support a lightbox for images, making it possible for end users to easily see a larger version of an image.
This message is associated with Microsoft 365 Roadmap ID 70669.
When this will happen
Rollout begins mid-February and should be complete in early March 2021.
How this will affect your organization
A lightbox popup is a window overlay that appears on top of a webpage. With this update, when SharePoint users click or tap on an image, they will be able to see a larger version of the image in the lightbox. When the lightbox is engaged, the remainder of the page is inactivated and dimmed. Users tap or click to disengage the lightbox and return the page to its normal functionality.
What you need to do to prepare
You might want to notify your users about this new capability and update your training and documentation as appropriate.