http://forum.xda-developers.com –
http://www.sammobile.com/2013/02/18/...-galaxy-note-2
Quote:
Samsung has just started to push Android 4.1.2 Jelly Bean update to the International Samsung Galaxy Note GT-N7000.  The Galaxy Note is Samsungs first Phablet device and has a very large user base thats why Samsung keeps on updating this device with all the new Android versions as they want to provide the Galaxy Note users with their best support experience. 
You might not be able to update your device to Android 4.1.2 Jelly Bean right away as the update is rolling out in phases.  So, it might
(HowTos)

Samsung posted an update on its official Facebook page for the Galaxy Note 2 today stating that the Note 2 as well as the Galaxy S3 smartphones will be receiving an update to Jelly Bean 4.2.2 by the end of May.

There was no mention of which versions of the phones will be getting the update first, but its safe to assume that global versions will get the update first, and after that, an carrier