Jack,
This is the traditional Kindle not the Kindle Fire (in any form). My understanding is that if you didn't upgrade by EOD yesterday you'll have to do a manual upgrade via computer (I've heard there are instructions on Amazon site), as Amazon will have blocked all Kindle's that didn't upgrade (I've heard rumors this patches a significant security issue which is why Amazon has blocked all devices without the upgrade).
Brian
"My father was very sure about certain matters pertaining to the universe. To him, all good things - trout as well as eternal salvation - come by grace and grace comes by art and art does not come easy." Norman Maclean, A River Runs Through It