Daniel - Martin Brinkmann over at GHacks has posted a list of all those optional updates: http://www.ghacks.net/2015/06/17/microsoft-releases-batch-of-non-security-patches-for-windows-june-2015/?_m=3n.0038.1642.dh0ao06kf3.1pec
Looks like the majority are to fix issues specific to certain machines (configurations).
Marc Thomas said
I've been using 8 a little more recently just to keep it active for the free 10 upgrade and yes, there are a lot of updates.
However, on neither of my Win 8 installations do I get the Win 10 notification, even though both are totally kosher.
Marc, you don't see the update notification because you're running a TechNet copy of Win 8.1.

September 17, 2008

Optional files are not necessary and there for personal choice. The explanations are often almost difficult to understand, so users are left wondering should I install? Well, I believe that if I have problems with the o/s, then maybe, but I resist as much much possible since it also might create a bigger problem elsewhere. IMHO, I opt out of the installation, Mindblower!
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