It happens, don't worry about it. Per this article from Android Central
Android 4.1.2 update for Galaxy Note could add Nature UX, multi-window feature | Android Central, the original Galaxy Note could see the same features as the Note 2. The only real differences between the Note 1 and 2 are the screens and software. The Note 1 is wider, dual-core, and is on Android version 2.3 Gingerbread; while the Note 2 is taller, quad-core, and is on Android version 4.1 Jellybean. If you want first-hand experience, go into a store and play around with a Note 2, then compare it to your Note. If the Note 2 wins you over, go for it. Either way, you will have a capable handset. Happy New Year