Security Advisory for Non-security Patch.
Microsoft's latest security advisory has me tickled color=#ffc0cb.
I can only guess that it is assumed by most people that any update to Internet Explorer must be a security fix, because this is an advisory to indicate that the patch to Internet Explorer is _not_ security related.
Long story short, Microsoft was found to be in breach of a patent - a patent for what sounds like a totally ridiculous and obvious process - and can no longer allow active content that executes automatically on page load. This update changes the behaviour of Internet Explorer such that you have to activate (in most cases, by clicking on its location) the active content.
My recommendation - Eolas won the lawsuit against Microsoft, not against you. Microsoft has to release this update, but you don't have to install it. Don't.