We offer you lots of options and settings so you can manage Outlook Web App (OWA) the way you want to. But what good are all of these controls if it takes too much time to find them? The OWA engineering team is always looking for ways to make features and settings more discoverable and intuitive. With that in mind, we’re excited to announce that, beginning this month, you’ll see that OWA options and settings have moved into a new navigation tree.
Early feedback overwhelmingly indicates that the new view improves discoverability, provides a cleaner user interface, enhances the experience for tablet users and delivers a scalable framework to let us add future OWA settings with minimal disruption.
Read more at source: http://blogs.office.com/2014/10/14/improving-outlook-web-app-options-settings-2/