One of the benefits of an Office 365 Subscription is your monthly costs going towards free monthly improvements
These can all be found here : https://products.office.com/en-us/business/office-365-roadmap#abc
Some ones we are excited about :
Exchange Online Protection phishing protection
Admins will be able to add phishing levels similar to how they set up their spam levels
Outlook for iOS: Draft sync
Sync drafts between different versions of Outlook, so you can start a message in one place and finish and send in another.
Office 365 Secure Score - Active Seat Average Score
Secure Score will add the ability for you to see the average score of organizations that have a similar number of Office 365 active seats.
And easily 50+ Team Updates