As reported by Central Florida News 13 ---
KENNEDY SPACE CENTER --
NASA has set a date for what could be the last flight of the space shuttle program.
Program managers have now officially added STS-135 to the launch manifest. In one sense that's a technical and bureaucratic step, but it clears the way for planning and scheduling at all levels of the space agency.
June 28 is now the target date for shuttle Atlantis' flight.
---continued at link.
A very nice finalization to be announced on the 50th anniversary of the Kennedy presidency.