Linux From Scratch (LFS) 7.0 has been released, according to the announcement, this release includes numerous changes to LFS 6.8, including updates to Linux kernel 3.1, GCC 4.6.1 and 
glibc 2.14.1. A somewhat major change was made in this version of the book by adding a new top level directory, /run. This directory has a tmpfs mounted and is used by programs like udev to store run time information. The directories /var/run and /var/lock are also linked to this directory.
The boot scripts have been updated to accommodate this change. The boot scripts have also been modified to place supporting scripts in /lib/boot. Another significant change is the addition of an md5sums file, allowing users to check the integrity of all downloaded packages.
About LFS
“Linux From Scratch (LFS) is a project that provides you with the steps necessary to build your own custom Linux system. There are a lot of reasons why somebody would want to install an LFS system. The question most people raise is “why go through all the hassle of manually installing a Linux system from scratch when you can just download an existing distribution like Debian or Redhat”. That is a valid question which I hope to answer for you. The most important reason for LFS’s existence is teaching people how a Linux system works internally. Building an LFS system teaches you about all that makes Linux tick, how things work together, and depend on each other. And most importantly, how to customize it to your own taste and needs.”
