Debian spokesman Alexander Reichle-Schmehl said the release came a week short of two years of development. The last stable release, Lenny, was made on February 14, 2009.
"Debian 6.0 is... coming for the first time in two flavours," Reichle-Schmehl said. "Alongside Debian GNU/Linux, Debian GNU/kFreeBSD is introduced with this version as a 'technology preview'."
Nine architectures are supported in the latest release - 32-bit PC / Intel IA-32 (i386), 64-bit PC/Intel EM64T/x86-64 (amd64), Motorola/IBM PowerPC (powerpc), Sun Oracle SPARC (sparc), MIPS (mips (big-endian) and mipsel (little-endian), Intel Itanium (ia64), IBM S/390 (s390), and ARM EABI (armel).
The two new ports to the kernel of the FreeBSD project using the known Debian/GNU userland are Debian GNU/kFreeBSD for the 32-bit PC ("kfreebsd-i386") and the 64-bit PC ("kfreebsd-amd64").
"These ports are the first ones ever to be included in a Debian release which are not based on the Linux kernel," Reichle-Schmehl said. "The support of common server software is strong and combines the existing features of Linux-based Debian versions with the unique features known from the BSD world. However, for this release these new ports are limited; for example, some advanced desktop features are not yet supported."