Process Improvements in the Kernel Development
Kalki writes "In an e-mail to the Linux kernel mailing list, sent Saturday, Torvalds proposed that kernel developers begin certifying that the code that they contribute is entitled to be included in the Linux kernel as well as a technique for "signing off on patches" that would better track which developers had handled source code contributions. check this Infoworld story on it."
There is an article on this subject at groklaw
It covers more or less the same territory in a bit more depth.
Remember that Linus "retires" from a version of the kernel when he thinks it is stable enough for a maintainer to supervise. Once he is freed from maintaining the current "release" version of the kernel, he starts working on the next development version.
He'll pass version 2.6 to someone and then start work on 2.7, just as he passed 2.4 to Marcelo Tosatti and then began working on 2.5.