it's essential
from what it seems the Samsung Galaxy S 5 would probably use Exynos 6 series,which would be 64 bit processor and since Samsung will move to it's own home-brewed Exynos for it's flagship,we will see much more Exynos in high-end smartphones from samsung and maybe some other OEMs too.so what i'm saying is, in last few years samsung didn't get along with developers by not releasing the whole documentation of Exynos processors, and developers had too many problems to work with this processor and it led to too few kernels and custom roms BUT with the migration to Exynos and the new smartphones base on Exynos Samsung will cooperate with developers because big portion of high-end smartphone users like to flash a custom roms on their devices and samsung doesn't want to lose them,and if Samsung doesn't cooprerate the pressure will rise so high that they have to cave, like the bootloader lock that HTC put on their phones and after few months they released the unlocker.so there will be a complete documentation,there will be a lot of developer who will work on note 3 Exynos version and if things go smoothly as i just said there will be cyanogenmod for note3 exynos too and it's a lot of development and it needs it own section.