After a relatively long road traveled with a few bumps along the way, as of yesterday, Linus's mainline tree (2.6.39+) contains literally every component needed for Linux to run both as a management domain kernel(Dom0) and a guest(DomU)...

Torvalds said that he considers 2.6.39 more of a solid version with a boring amount of progress – however, with ipset, the Xen network backend, as well as many new and improved drivers, the new kernel, which is expected to be released in late May or early June, does offer numerous improvements which matter to end users.

The Linux 2.6.38 is effectively ready for release. The condition of the kernel is quite good (hence the large just-published seven-way file-system benchmarks on a SSD and HDD) and Linus noted Monday that when releasing the 2.6.38-rc8 kernel that it could even be considered final, but as he's away for...

Greg Kroah-Hartman has announced the release of the 2.6.32.29, 2.6.36.4, and 2.6.37.1 stable kernels. They contain lots of fixes all over the tree. Also, this will be the last of the 2.6.36.x stable kernels: "[...] you should move to the .37 kernel series as this is the last .36 kernel...