Microsoft announce that group-based licence management is now in public preview. This will offer two new services: firstly, you can assign a licence template to an Azure AD security group and then as users join and leave the group, licences are automatically assigned and removed. Secondly, you’ll be able to selectively disable components in product licences so that you can do a phased roll-out of the services of Office 365 E5 for example.
Find the Microsoft announcement here: http://bit.ly/2lvlpF5.