With 13 missions planned for International Space Station assembly and spare parts deliveries the current, sort of, end mission date is 29 July 2010, so I hear, but why not fit one more in, say in September?
Stephen Oswald, former Shuttle pilot-astronaut and mission commander and now Boeing Shuttle programme manager and vice president, told me yonks ago he expected the orbiters to keep flying into 2011 but that was back during the Return To Flight days and so that could have been a harsh judgement on the flight rate that could be expected. He still might be right though
Meanwhile we all await Saturday following the fuel sensor glitch, but yesterday also saw a Boeing Delta two launch delayed
While we all wait you can watch Atlantis spin slowly during its STS-115 mission