The F-35B recently completed its first vertical takeoff and Lockheed Martin has shared a video of the take off and landing, check it out up top.
While the "B" variant of the plane has completed several short takeoff and vertical landings, this is the first vertical takeoff.
Here are more detail from a release:
NAVAL AIR STATION PATUXENT RIVER, Md., May 20, 2013 – A Lockheed Martin [LMT] F-35B Short Takeoff/Vertical Landing (STOVL) Lightning II test aircraft recently completed the first-ever Vertical Takeoff (VTO) on May 10. VTOs are one of the many capabilities required for the fielding an F-35B aircraft. While not a combat capability, VTOs are required for repositioning of the STOVL in environments where a jet could not perform a short takeoff. In these cases, the jet, with a limited amount of fuel, would execute a VTO to travel a short distance.