Rhenquist to retire imminently?

According to this post at the Volokh Conspiracy, Bob Novak just said on CNN that Rhenquist will be announcing "as soon as the President lands," which will be approximately 5:00 EST. [update as of 7/9 @ 8:45 a.m.: No Rhenquist retirement after all, so all those rumors were wrong, at least as to the timing of the announcement. There was also some talk yesterday of Stevens and Ginsberg possibly making announcements, but a retirement from them was seen as unlikely].