Microsoft on Monday announced the general availability of its Planner collaboration tool, which will roll out in the next few weeks to all eligible customers -- those who have Enterprise E1-E5, Business Essentials, Premium or Education subscriptions to Office 365. Planner lets users create new plans, as well as organize, assign and collaborate on tasks. Users also can update statuses and share files. It provides visual dashboards and email notifications to keep members of a team informed.