virtualbox[.]org/wiki/Downloads
This update has a longer than usual change log, though it doesn't appear that it's ready for the newer secure boot certificate yet. The only thing odd that I noticed probably won't effect too many people... I've long been annoyed by a history of problems getting the new extensions pack installed in Windows guests, so my habit is to uninstall the old version 1st, then install the new one. Uninstalling the existing version crashed the Win11 VM. It did uninstall successfully in Safe Mode, but then the new version failed on installation, both in regular Windows & Safe Mode. Installing the new version without removing the old one first worked with all my Windows VMs.