Samsung Galaxy Note Android 4 leaked – AT&T
Samsung Galaxy Note Rom is available for download, but this is only for AT&T users (This is what I understand).
This is not the final release so, I would suggest all the users to wait till the official release. You may end up in some kind of trouble with the upgrade. According to the above hands on video, things are working fine. You can download the rom exe file from Rootzwiki.
You need to download this file and using your windows pc to upgrade your Samsung Galaxy Note. As per the forum some people have ended up in trouble and some have installed it. You need to do this at your own risk. I am not sure if you would be able to go for the official release once it is released or if you would be able to run all the applications without any problem.
Word of caution – This rom is only for AT&T users and not others.