Focused Inbox is a new feature that gives you 2 separate views of your Inbox:
- Focused – shows your most important messages
- Other – shows all other messages
This feature is already available in Outlook mobile clients and being rolled out to OWA and Outlook 2016 desktop clients in Q1 2017. Note: Microsoft has delayed the rollout from it’s initial target of November 2016.) This feature replaces the Clutter feature that you may have been using.
For more information on Focused Inbox, including screenshots showing how to use the tool or turn it on and off, please see this support article from Microsoft.