I was considering the Note Edge too. But the lack of info about it, lack of pricing details, lack of release date, cost $100 more, lack of enthusiasm about it or just general lack of discussion in the Note Edge forum here led me to the Note 4.
If it came out at the same time as the Note 4 and also was only $30 to $50 more, I would have a Note Edge.
I started a thread on the Note Edge forum to capture ideas (use cases) for the Edge screen and the group came up with 23 of them. So maybe developers will target it but I doubt many will other than Samsung and maybe a couple other big names like ESPN/CBS (sports scores/news ticker), stock price ticker, and other news organizations (breaking alerts).
http://forums.androidcentral.com/sho...d.php?t=434808