FreeBSD 5.3-RELEASE is now officially available. This release marks a milestone in the FreeBSD 5.x
series and the beginning of the 5-STABLE branch of releases. New features from 4.x include massively upgraded SMP scalability including the new KSE M:N threading implementation, and the new ULE constant time scheduler (currently switched off per default). All in all these features bring scalability of kernel features on SMP systems (at least small to midrange systems) more or less on par with the Linux 2.6 kernel series with the NPTL threads library.