Yeh, I wondered what they're doing. It's almost as thought they're having a poke round all those folk that either don't upgrade and those that run Steve Gibson's Never 10.
My laptop with 7, and post Never 10 being run, has now settled after days of 'updates'. (about 14 hours in all). But I'm aware this could be only for the time being.
Being somewhat disillusioned with the human race, I'm now thinking they may wait until Ten is chargeable, and then do something even nastier than pester. It's kind of strange thinking of Microsoft as an enemy.