I've alerted the firmware developers, hopefully they'll get this sorted soon. I'm Chris by the way...
To prevent the notification from appearing for now, please follow these steps:
Settings (one or two cogs)>Other tab>More Settings button>Apps>Scroll all the way to the right>Scroll down to and click on OTA Updater>Clear Data>OK button
Don't open the OTA updater app for now, wait until the next release for your model. For now it will report an error if you do open it, about mismatch, safe to ignore this, same for all people.