The plane that is currently scheduled to replace the aging F-16 as the air superiority mainstay of the USAF, and to complement the F-18 of the United States Navy. The UK wants some too.

The Boeing X-32 and the Lockheed X-35 are to be the two contenders for this lucrative role, and their prototypes are being tested this year.

You can read all about it at the program's home page:

I find it somewhat interesting that they have what seems to me a low cost requirement: $28 million for your basic model, to $38M for an Aircraft Carrier-ready version.

EDITOR'S NOTE: a now-deleted writeup modified this one with the following: The F-16 is the U.S.'s current multirole fighter and the F-22 is going to replace the aging F-15 as the next generation air superiority fighter. The JSF, Super Hornet, and the F-22 will work together like today's F-16, F-14 and F-15 do.