I decided to install the Insider Preview on my laptop, as a means to evaluate Windows 10 before the final version touches my desktop, and so far I'm liking it. It does have a couple of annoyances, but overall it's good, and the in-place upgrade was flawless for me.
That said, to the point: I have a handful of updates in my WU that I decided not to install just yet. All of them popped up around the same time, and all of them are related to the upgrade process between Windows 7 and Windows 10. Once I decide to upgrade to Windows 10, I will unblock KB3035583 and friends, and let Microsoft upgrade to the new OS in-place.