For those of you who have been waiting for S7 Edge port on Note 4, definitely check out the latest version of Dr. Ketan ROM.
Originally developed for SM-N910G, Dr. Ketan’s ROM can easily be installed onto SM-N910F Note 4. You should also be able to install on T-Mobile or Canadian Note 4 with custom kernel and data fix (see the download link).
UPDATE: I was able to get it also working on Sprint Note 4, please see How to Convert Sprint Galaxy Note 4 into Galaxy S7 Edge!
Biggest change from previous version M3 and M2 is that now the ROM supports full S7 Edge features like Edge Screen panels along with full Note 5 features including off-screen memos and Air command. You will also find the latest S7 Edge launcher with ability to change grid size and full support for new TouchWiz themes.
Couple that with some customization features provided by ROM Tool N4 app, Viper4Android, full root with SuperSU, and Peel Smart Remote app, this ROM essentially makes your aging Note 4 better than a Note 5 or S7 Edge software wise.
Performance is also beastly as I scored 81,531 on Antutu, which is the highest score I’ve seen on the Note 4 so far. Battery life is also excellent so you should have no problem daily driving. The only thing not working right now is Always-On Screen but I believe that should be fixed shortly and I should have an update.