An interesting post over at Arstechnica.  John Siracusa pulls together all of the rumors building on the way to WWDC, and puts forward some interesting speculation as to where the OS X kernel is headed.

 Nevertheless, I remain convinced that there’s something going on with the Mac OS X kernel. The most logical reason that I can think of for Apple’s refusal (thus far) to publish the source code to the x86 version of the Mac OS X kernel is that the kernel shipping today in the x86 versions of Mac OS X Tiger is an evolutionary dead end, and therefore not worth the effort to pretty-up and publish.

 With the talk of virtualization, it would make sense for there to be serious kernel-level changes, but to actually toss the kernel?  WWDC becomes curioser and curioser…