I finally got to see one.
SpaceX's F9R Dev — the modified Falcon 9 first stage that's a bigger sibling to SpaceX's Grasshopper testbed rocket — flew a second time Thursday at the company's McGregor development facility, two weeks after its first free flight.
The test is another step in SpaceX's drive to produce a recoverable and reusable first stage, which saw another leap forward with the successful splashdown of the actual Falcon 9 first stage after it launched the Dragon cargo ship toward the International Space Station.
I can't get much more specific because SpaceX hasn't talked about the test yet (that usually happens after a day or two). As near as I could tell (which turned out to be very poorly indeed — see this update) it flew
to the same 800-foot height that it did two weeks ago, and took the same type of course: up, hover, move sideways, land.
More as I get it.