The 2016-05-31 Azure Storage version includes the following features and updates:
The maximum size of blocks has been increased to 100 mebibytes (MiB). This means that the maximum size of a block blob is now 5,000,000 MiB, or about 4.75 tebibytes (TiB).
The public access level of a container is now returned from the List Containers and Get Container Properties APIs. Previously, you could obtain this information only by calling the Get Container ACL operation.
The Put Message API now returns information about the message that was just added, including the pop receipt. This enables you to call the Update Message and Delete Message operations on the newly enqueued message.
The List Directories and Files API now accepts a new parameter that limits the listing to a specified prefix.
Several error messages have been clarified or made more specific.
All table APIs now accept and enforce the timeout query parameter.
Content-MD5property is now returned when you request a range of a blob or file. Previously, this property was returned only for full blob and file downloads.
A new Incremental Copy Blob API is now available. This API allows efficient copying and backup of page blob snapshots.
If-None-Match: *now fails when it's reading a blob. Previously, this header was ignored for blob reads.
During authorization, the canonicalized header list now includes headers with empty values. Previously, these headers were omitted from the list.