ominous out-of-band microsoft patch

Microsoft has an ominous out-of-band patch today for pretty much all Windows systems. While I’ve not been able to find any details enough to even give my boss and colleagues a recommendation on how to deal with this, but from authoritative(-sounding) snippets I’ve come across, it sounds like the real deal Big Deal. Sadly, this afternoon is our yearly corporate meeting so I won’t get back to this until this evening. If anyone wants to drop a link to their own blog where you reveal more details, I’d totally be appreciative of the help.