Microsoft released the preview version of the Loop app on March 22. The app works well for collaboration with people from the same Microsoft 365 tenant but fails utterly once external people are involved. Some other teething problems are evident, but there's enough in the Loop app for people to make their minds up if this will make collaboration smarter within their organization.
Announcements at Microsoft Ignite 2017 brought to light the additional licensing costs for using some features of Office 365 Groups.
Microsoft Forms has started rolling out to Office 365 commercial customers.
Getting started with Microsoft Teams, the group communication and collaboration tool for Office 365 customers.
After several months of using Microsoft Planner in Office 365 to manage tasks and collaborate on projects, here's what's good about Planner so far (and what's missing as well).