This has been rumored for a long while, but today's Examiner is reporting
that it appears to be moving forward: "The D.C. Circulator bus system is expected to expand with at least two new routes in 2008, one between the Walter E. Washington Convention Center and Adams Morgan, and the other from Union Station to the new Washington Nationals ballpark. [...] But it is not expected to be implemented until late 2008, after the Nationals' season." The article doesn't give an exact route, but previous statements by DDOT and others mentioned that it could run past the new US Capitol Visitors Center (yeech--don't get me started) and the Capitol South Metro station as well. And no reason is given for why it wouldn't start until late next year. The Circulator is run by DDOT.
Here's the Washington Business Journal blurb
on the plans, with not much additional detail but saying that the areas "should be covered by the end of 2008." And there's also a somewhat confusing statement late in the story, after it says that two new routes will be added, that says "The department will try to modify the existing three routes by extending them to the needed areas, but if that becomes too cumbersome, it will create the two new routes[.]" So now the question is, are there really two new routes, or just expanded routes being covered by the existing routes?