According to reports, Microsoft has delayed the release of its Windows Mobile 7 OS. The mobile OS will now be launched in the second half of 2009. It was previously slated for early 2009. The company is said to have notified its partners about the delay, though an official confirmation is still awaited. Windows Mobile 7 will face stiff competition, when it eventually debuts, from Symbian OS, Android and the iPhone . A new version of the most popular mobile OS in the world, Symbian OS, is also expected in 2009. Microsoft certainly has its task cut out.