Below are the new features on the high availability:

• Continuous replication: block MODE: This mode will allow the passive mailbox copies are up to date, as the active database is updated; each update written to the database log file is also shipped to the passive mailbox copies. In the event of a failure, the passive database copy is updated with the latest log updates which minimizes DATA loss
• Improved client experience for cross-site failover: Admin can now control if Outlook will redirect cross-site or if it is automatically connected
• Improved support for 2-node DATACENTER resilient topologies ( Now supports Datacenter Activation Coordinator mode (DAC) Mode with two SERVERS in a DAG )
• Faster failovers with improved post-failover client experience (Failover drives the database to a clean shutdown by playing all logs. The mount process then simply brings database up, with no recovery required, which speeds up the failover time. )
• Mailbox database redistribution (New script which can move active mailbox databases back to the copy with the highest activation PREFERENCE)

Below are the new features on the high availability: