The much-anticipated FreeBSD 8.0 release is finally available, albeit it's arriving more than a month late. FreeBSD 8.0 supports Clang/LLVM (Edit: though right now GCC remains the default compiler), improvements to the Jails subsystem, a new USB stack, the ULE 3.0 scheduler that's optimized for SMP environments, Sun's D-Trace support for kernel traces, NFSv4 support, network improvements, improved ZFS file-system support, and much more.
FreeBSD 8.0 is available from their (FTP server), while we still have been waiting on an official release announcement. Details on some of the FreeBSD 8.0 features can be found from this web-page. Information on the FreeBSD 8.0 release process can be found on the FreeBSD Wiki.
Bit more here