Glow users have access to SharePoint Team sites where they can customise content to collaborate with colleagues or with their classes.
Microsoft will be making changes to the format of the classic SharePoint Team sites to make them more dynamic and mobile-ready. These changes are expected to be implemented in March.
Whilst the format of the classic SharePoint Team sites may have changed all the content will still be there and it can be easily reverted back to the classic SharePoint homepage if required. If a user has customised the classic team site in the past then this will not be updated to the new modern home page.
You can find out more on Microsoft’s website.