Over the past few months, Ivan Kelly has been working on porting MINIX to Xen as part of a university project. As last Monday was the final submission date for the project, he is now free to release it in the wild. Currently only the microkernel and the console driver have been ported, but a block device driver is in the works.
The code and a compilation guide can be found on the website. Contributors are welcome to join the project. On a related note, a new test version of MINIX has been released as well. OSNews reported extensively on MINIX 3 last year.