Basically, the Note 4 Developer Edition is the same Galaxy Note 4 that you can buy right now, with the difference that it comes with an unlockable bootloader (this, of course, being what makes it developer-friendly). The Developer Edition also has the advantage of being slightly cheaper than the Note 4 that Verizon is currently selling (for $699.99 off-contract).
Released this month in the US, as well as in lots of other markets, the Samsung Galaxy Note 4 is undoubtedly one of the best large-screen smartphones that you can buy this year. If you want to find out more about it, check out our review of it here.
source: Samsung via Droid-life