I am in western Canada. I seen notes of this out of band update a couple of hours ago on another site. On a Windows box, I just updated Firefox, Thunderbird and plugins (maybe 20 minutes ago). The Firefox check for updates did not say there was an update for Flash available.
I also run Debian machines, and it will be a while before those filter through. But, I just did an apt-get update and checked the list of things that are updateable, and nothing flash is there yet.