Launch of the STS 114 Discovery return to flight mission on 22 May has been cancelled and the flight has been moved to the next launch window of 12-31 July. Discovery will have to be rolled back to the Vehicle Assembly Building from pad 39B at the Kennedy Space Center. The critical issue about ice forming on the external tank during and after loading of the cryogenic propellants is continuing to concern NASA, which wants more time to analyse the issue.
Source: Flight International