Samsung has already provided a wealth of software upgrades for the original Galaxy Note, which first shipped just over a year ago on Android 2.3-based firmware. Now signs seem to point towards the OG Note being updated directly to Android 4.1.2 Jelly Bean, as part of an upgrade that'll include two major new features -- the TouchWiz Nature UX, and the multi-window feature from the Galaxy Note 2. Multi-window was a showcase feature for the Note 2, allowing multiple apps to be used on a split screen at any time.
Reports from SamMobile indicate that a new firmware version, N7000XXLS3 is in testing at Samsung, and includes the Nature UX and multi-window support, in addition to limited "air view" floating cursor support using the S Pen. And today a video has surfaced from French YouTuber Jimmy Nodet, which seems to show an even newer ROM -- N7000XXLS7 -- in action. The (admittedly shaky) footage shows the TouchWiz Nature UX running on an original Note, as well as fully-functional multi-window capabilities. The video description claims this is an "official Android 4.1.2 update" for the international Galaxy Note. That doesn't guarantee its legitimacy, but on the other hand the video doesn't match any custom ROM we're familiar with.
Last month rumors suggested Samsung would also bring multi-window to the international Galaxy S3, in an Android 4.1.2 update slated for December. If the original Note was to get the feature, it'd certainly make sense for it to appear on the S3, too.
Of course Samsung hasn't announced anything officially, but there are a lot of original Galaxy Note owners out there who'd be very happy if these reports turned out to be correct. Nevertheless, until the updated software out of Samsung's internal testing circles and available for download, Note owners would be advised not to get too excited.