This doesn't really depend on any extra steps -- I've just uploaded grub2 and grub2-signed to xenial-proposed queue, so as soon as it's reviewed by a member of the SRU team it will be available in proposed.
From there, we'll need people to test this carefully to make sure nothing is broken and that it's fulfilling its intended purposed (ie. fixing the issue), after that we'll be able to make it available to the general public in -updates.
This doesn't really depend on any extra steps -- I've just uploaded grub2 and grub2-signed to xenial-proposed queue, so as soon as it's reviewed by a member of the SRU team it will be available in proposed.
From there, we'll need people to test this carefully to make sure nothing is broken and that it's fulfilling its intended purposed (ie. fixing the issue), after that we'll be able to make it available to the general public in -updates.