SystemImager is software which automates Linux installs, software distribution, and production deployment.
SystemImager makes it easy to do automated installs (clones), software distribution, content or data distribution, configuration changes, and operating system updates to your network of Linux machines. You can even update from one Linux release version to another!
Release 3.7.5 includes big improvements in the monitoring engine, in the BitTorrent transport and some bug fixes.
See details at http://wiki.systemimager.org/