Full Disk Encryption includes the following enhancements:
Multi-disk support: Full Disk Encryption added the capability to encrypt multiple hard drive disks on one device. Previously you could encrypt multiple volumes on a disk, but only on one disk per device.
System Disk enhancement: Full Disk Encryption is no longer limited to Disk0 and can be enabled on other numbered System Disks.
Operating System support: Improved support for Windows 10 feature updates and the Hibernate mode.