Linux From Scratch is a distribution effort and documentation for aiding the user through the process of being able to build the entire makeup of the distribution manually, a.k.a. from scratch. The Beyond Linux From Scratch (BLFS) dives further than LFS and covers getting as display server, networking, printer, sound, and more.
Linux From Scratch 8.0 adds in Gold linker support, removes the symbol link from /lib to /lib64 and does away with /usr/lib64, which are the reasons why the major version bump took place.
Linux From Scratch 8.0 also updates to GCC 6.2, glibc 2.24, Binutils 2.27, and other package updates.
More details about Linux From Scratch LFS/BLFS 8.0 can be found via this weekend's mailing list announcement and LinuxFromScratch.org.