There are a couple of new features in this build. One of the witness options for failover clustering, File Share Witness, has two new enhancement. The option blocks the use of a Distributed File System share as a location to prevent stability issues. And another update enables the use of a File Share Witness for some previously unsupported scenarios, such as absent/poor Internet access; lack of shared drives for a disk witness; and more.
Today's build also adds two new PowerShell commandlets to help users to move clusters between domains.
Microsoft officials note that the coming Storage Replica Standard Edition will have some limitations around volumes, in terms of size, partnerships and number of volumes supported. They note that these limitations may change during the preview phase and at RTM based on feedback.