Among the changes being considered for the in-development Fedora 45 is a lightened version of the GRUB UEFI bootloader that would focus on being a minimal implementation suitable for confidential computing.
Red Hat engineers are considering a separate, minimal package of the GRUB bootloader that would be focused just on UEFI boot, UEFI Secure Boot enabled, and the bare minimal number of built-in modules while also being able to handle Unified Kernel Images (UKIs) and the Bootloader Specification (BLS) files.
The standard GRUB bootloader would remain