White Box is the latest project to release a Linux distribution rebuilt from source RPM packages for Red Hat Enterprise Linux (RHEL) 4: "Yes it has been delayed a few weeks longer than planned, but this baby is finally born!
What is the goal for White Box Linux? To provide an unencumbered RPM-based Linux distribution that retains enough compatibility with Red Hat Linux to allow easy upgrades and to retain compatibility with their errata SRPMs. Being based off of Red Hat Enterprise Linux (RHEL) 3.0 means that a machine should be able to avoid the upgrade treadmill until October 2008 since RHEL promises errata availability for 5 years from date of initial release.