SpaceX’s first mission for USAF is to launch X-37B

U.S. Air Force Secretary Heather Wilson disclosed that SpaceX will launch the X-37B into orbit this August.

SES-10 Launch - world's first reflight of an orbital class rocket (32915198904)
By SpaceX [CC0 or CC0], via Wikimedia Commons

This is the first payload the company is launching for the service and it was usual that the launch was only disclosed two months ahead.