Samsung Recent flagships i.e Samsung Galaxy S6 / S6 edge / S6 edge + and Note 5 have not got any Working AOSP / Cyanogenmod Custom Roms yet .
Samsung Galaxy S6 was launched in April 2015 and till now no developer was able to build AOSP / Cyanogen Custom builds for this device .
Users says that if they got a functional build for Any one device ( i.e either , Note 5 , S6 , S6 edge or edge + ) , it will be very easy to port the build to other three devices .
Till now Xda users have made pledges ( In just 18 days ) of giving about $418+ .
The Money will be distributed to the developer who will provide a Working source / build of AOSP / Cm based custom Rom for any one device ( Note 5 , S6 , S6 edge or edge + ) .
source - xda