Mine updates my game automatically with instant on.
On occasions though, there are games that don't update immediately. I can only assume it's waiting for the next cycle before it updates, rather than pushing for every console world wide to update.
i.e. if Dev released update after the cycle, you have potentially 24 hours to wait before it automatically updates.
I find that happens a lot on my daily games but other games I play once in awhile are always updated.
