SSD Premium Disk storage is typically used for I/O intensive ops, providing low latency.

The announcement, available at all regions covers two large disk sizes 2TB and 4TB.

At the same time, the Input Output Operations per Second was increased to 7,500 along with bandwith to 250 MBps.

Please follow the links to learn more  About disks and VHDs for Azure Windows VMs documentation web page

Prices can be found at Managed Disks and Azure Disks Storage (for Unmanaged Disks).