It is far from an exact time line, but it is safe to say that with Justice Stevens' announcement Obama will get to chose at least one more Supreme Court Judge. Stevens is the oldest member of the court, and this was not unexpected. Democrats no longer have a filibuster proof majority, so it will not be as easy as it was to get Sotomayor through even if he retires before the midterms in which the Republicans are expected to pick up seats.
"Speculation has arisen that Stevens, 89, will step down sooner rather than later. The White House is preparing for confirmation proceedings over the summer, the New York Times wrote Saturday.
In an interview with the Washington Post, Stevens, who is considered a member of the liberal wing of the Court, Stevens said he will "surely retire in during Obama's presidency."