I would also like to know what the QA process is, because all I can see is basically 'linus pulls in changes in the merge window, checks that the basic stuff builds, then releases the RCs and some people do some checks in some way, varying from users on the bleeding edge, some people doing manual verification on specific hardware and use-cases, and maybe some automatic tests and analysis that are not really documented anywhere, and the end result is some bug reports'. Is there anything more co-ordinated than that? Like some description of what is tested and how, or an explicit green indication that those tests have actually happened and a policy on what would hold up a release?