Jeff Teper mentioned the 3 ‘G’s [ office groups, office graph & governance ] in the SharePoint 2016 event few weeks back.
In this event, one of the themes was Intranet in your pocket.
SharePoint is going to change by way of ease of user experience in terms of smooth handling of the document libraries, lists,sites. It will be going to fully mobile enabled soon.
As per the #roadmap, SharePoint mobile app for iOS is going to come in the second half of 2016! Also site activity and insights are going to be included.