Do you mean EFI? If so this was released yesterday. It covered in some detail here:
https://forums.macrumors.com/threads/1328868/
Do you mean EFI? If so this was released yesterday. It covered in some detail here:
https://forums.macrumors.com/threads/1328868/
Just did a Software Update and saw it on there.
I'm not going to install it because I am not having any issues.
Be my luck, I install it and it breaks something else!