The UEFI 2.3.1 specification is now available at www.uefi.org.
Notable additions to this version of the specification include-
* Time-based authenticated variable and richer signing
* Key Management Services (KMS) protocol (loosely based on KMIP)
* Storage Security Command Protocol for hardware full-disk encryption (FDE) devices
* DUID-UUID usage in netboot6 to report platform identification
* Non-Blocking interfaces for Block I/O protocol
* Enhancements to the USB protocol for USB 3.0
Take a look
Notable additions to this version of the specification include-
* Time-based authenticated variable and richer signing
* Key Management Services (KMS) protocol (loosely based on KMIP)
* Storage Security Command Protocol for hardware full-disk encryption (FDE) devices
* DUID-UUID usage in netboot6 to report platform identification
* Non-Blocking interfaces for Block I/O protocol
* Enhancements to the USB protocol for USB 3.0
Take a look