Samsung Electronics has started pushing out Android 4.1.2 firmware upgrade build version JZO54K to the International GALAXY Note GT-N7000 phablet. The upgrade is available in Asia (Hong Kong, Taiwan) and in Europe (Germany) these are the only countries which are confirmed for now.
Please note that this is a in stages rollout and may or may not be available in your area (location) at this time. If you would like to check if it is available for you just plug-in the GNote into the USB cable and connect it to your PC/Mac/laptop and make sure you have the latest Samsung Kies software version installed.
According to user reports in Germany the file size is 808 MB, while Asian firmware size is around 763 MB.