From an internal NASA memo, they are shooting for a September 11 launch of Atlantis for the Hubble rescue. Cool. Remember, you heard it here first!
"We have been informed by the JSC SM4 Mission Director that the space shuttle Flight Assignment Working Group (FAWG) has assigned the HST SM4 mission a launch readiness date of September 11, 2008 on space shuttle Atlantis (OV-104). This flight is designated STS-125."UPDATE: This mission will be the final flight of Space Shuttle Atlantis.