My wife had a Kindle that was really out of date. It wouldn't connect to the store or find updates.
I had to put an update on the device using a laptop and then restart, which then updated the device. However that was still too old, so I had to repeat the process before it was fully up to date.
Was this the update? I remember Amazon made a pretty big attempt to notify everyone at least a month before the date but I imagine it would have been difficult to reach everyone.
I think so. My wife had the Kindle stored away somewhere and found it again, so we didn't know about it. She hadn't used it in at least a year, maybe two.