Today the Qubes OS released v3.0 release candidate 2.
They ALSO created a new Twitter feed, @QubesOS.
Qubes is a Linux distribution created by Invisible Things Lab (ITL), a security research firm that specializes in hardware/firmware security; Qubes includes virtualization technology to isolate each process from each other in ways to help increase security.
“There have been no new features in this release compared to Qubes 3.0-rc1 that we released in April, only bugfixes. Although Qubes 3.0-rc2 is major improvement over Qubes 3.0-rc1, there are still some issues to be resolved – check “Known Issues” section of installation guide. Qubes 3.0.0 will follow soon (coming weeks), together with 3.1-rc1 that is currently being merged (and which is bringing a bunch of cool new features, as discussed in the previous annoucment).