Productivity features

• New user Guide tailored for the user (role)
• Collaboration gets better with Office 365 Groups enhancements (CRM Online)
• See our previous blog post
• Email signature (web client)
• Add a professional touch by adding an email signature.

Service features

• Manage project-based sales with project service capabilities (CRM Online)
• Estimate, quote, and contract work
• Plan and assign resources
• Enable team collaboration
• Capture time, expense, and progress data for real-time insights and accurate invoicing
• Manage remote service teams with field service capabilities (CRM Online)
• Create SLAs for any custom entity and other system entities
• Interactive service hub enhancements
• Interactive service hub dashboards and forms help users to prioritize their workloads and solve cases faster. In this release, Microsoft have enhanced the interactive service hub to support more customer service scenarios.

Mobile features

• Rich mobile offline experience (CRM Online)
• Users can view, update, and add records when they are disconnected from the Internet, and they don’t have to save changes or additions as drafts first.
• Mobile enhancements
• Service reps can now search for, view, create, and edit knowledge articles.
• Sales professionals can now manage quotes, orders, and invoices.
• Preview feature
• Stay on top of all the news related to an account, lead, contact, or opportunity right from your CRM mobile app

More details on microsoft.com