One, I loved a twitter response to this news I read that said, "Fallon to replace Leno in 14, hope Jimmy likes TBS."
Two, I have seen several people talking about there being more of a behind the scenes story evolving. That it is Lorne Michaels is the one going out for the kill on Leno. Lorne was a big supporter of Conan in the back offices of NBC, and was very unhappy about the whole tonight show incident and how Conan was treated. Now that executives at NBC/U have changed, Leno has lost a lot of his supporters, and Michaels is out for payback and has been punching for the dumping of Leno.