Announcing the public preview of Azure AD group-based license management for Office 365 (and more)!

And really straightforward to configure, albeit only via the Azure portal for the moment.

Here's a link to the documentation as well: https://docs.microsoft.com/en-us/azure/active-directory/active-directory-licensing-whatis-azure-portal

Not too sure about this bit:

Also, every user inheriting any licenses from groups must have the paid Azure AD edition license assigned to them