SCOTUS to get new Chief Justice?

WaPo reports many in and around the Beltway believe that SCOTUS Chief Justice William H. Rehnquist will retire next week, at the end of the Court's term, creating a Chief Justice vacancy for for the first time in nineteen years. Among those in the running to replace him on the nation's highest bench are AG Gonzales (who would become the first Hispanic Justice), and federal appeals Judges John G. Roberts and J. Michael Luttig.

This could just be speculation, a pasttime in D.C., but such ideas have been widely reported ever since November so I'm more inclined to believe that he will resign sooner rather than later.