I've seen the message on a W8.1 desktop today, but we've been away a few days so not sure from when that would have been visible.
I think my main W7 system won't get it as I hid the update. But I'm planning to rebuild it soon with bigger disks and without XP (currently dual-boot) and will then "probably" migrate up to W10 after a decent wait if other systems do so OK.
My W10 test desktop system will be the first target, after I've reverted it to its OEM W7 and let all the missing updates arrive. Presumably at the end of July. The W8.1 desktop will probably follow fairly quickly.
The test system is updating as I type this to version 10130.
Couple of other W7 systems (laptops) that I'll need to think about..............
And
probably definitely some others kicking about that I've
forgotten overlooked.