The Xen Project has announced the release of Mirage OS 2.0, which they describe as "the industry's first software framework that unifies cloud and embedded deployments behind a safe, secure programming language, allowing developers to seamlessly build systems that span both embedded devices and public cloud services."
Mirage OS 2.0 also adds support for distributed computing, networking, and storage. Mirage OS allows creating "lean and efficient unikernels" that run directly on the Xen hypervisor. Among other 2.0 highlights is the Irmin distributed Git-like storage system, OCal-TLS, ARM device support, Vchan protocol support, Ctypes library support, and other enhancements.
More information on Xen's Mirage OS 2.0 can be found via this morning's press release