The facebook post from Luke AFB has been updated to the version below.

We understand that Singapore accepted the invitation by the United States to demo the F-35 at Luke Air Force Base during Defence Minister Dr Ng Eng Hen's visit to the base, as part of his visit to Exercise Forging Sabre.
Best regards,


F-35B aircraft expected to visit Luke AFB Dec. 10...

F-35B aircraft from Marine Corps Air Station Yuma are expected to be flying at Luke AFB from approximately 10:30 a.m. to noon on Tuesday, Dec. 10. Senior defense officials from Singapore are visiting the base as part of Forging Sabre, a Singapore armed forces exercise taking place at Luke and at the Barry M. Goldwater range. Singapore is considering purchasing F-35s in the future.
The F-35B is the “short takeoff and vertical landing” variant of the aircraft developed for the U.S. Marine Corps. It is configured differently than the F-35A “conventional takeoff and landing” variant used by the U.S. Air Force. The first of Luke’s F-35A aircraft are expected to arrive in early 2014.
Luke will not be hosting media for the event, but media and the general public are welcome to observe the aircraft flying in the pattern from public areas outside the base.