At the end of his speech at LinuxWorld 2007, Andrew Morton, lead developer of Linux kernel, revealed that maintainers efforts will focus, among other things, on OS virtualization technologies.
And this despite Linux already implements a hardware virtualization solution (KVM) and has several 3rd party OS virtualization solutions available (OpenVZ, FreeVPS, Linux-VServer).
Thanks to Kir Kolyshkin for the news.