I can only imagine it is related to this announcement from SpaceX...
http://www.spacex.com/press/2012/12/19/nasa-selects-spacex-r...
"Hawthorne, CA – Space Exploration Technologies (SpaceX) today won a $440 million contract with NASA to develop the successor to the Space Shuttle and transport American astronauts into space."
"SpaceX expects to undertake its first manned flight by 2015 – a timetable that capitalizes on the proven success of the company's Falcon 9 rocket and Dragon spacecraft combination. While Dragon is initially being used to transport cargo to the International Space Station, both Dragon and Falcon 9 were designed from the beginning to carry crew."