One of the new features in this release:
Support for UEFI pre-boot environments. This enables you to stream at startup time using gigabit network speeds, so users experience faster startups, and to use disks over 2 TB.
https://docs.citrix.com/en-us/provisioning/7-7/pvs-new.html
I’m unclear of the specifics. What does ‘UEFI pre-boot environments’ mean? Does this mean OVMF support or something else? How does this help my startup time using gigabit network speeds, does this mean UEFI pre-OS network functionality is used, or something else?
Where is the security documentation for Citrix sysadmins, clarifying pre-OS issues if they’re being added to the stack for the first time? (For that matter, I’ve not found any good docs on this latter topic by any VMM vendor.)
Firmware Security 