The F-22 Raptor is the most formidable fighter in service. So its apparent sooner than expected retirement has caused some comment.
Playlist - F-35

Is the USAF Fed Up With The F-35?
The United States Air Force have began a study to design an aircraft to replace the F-16. Trouble is, the F-35 was meant to be that!

Saab Gripen Goes Up Against F-18E and F-35 for Canadian Fighter Contract
Saab, Boeing and Lockheed are all fighting to offer the best deal to the Canadian government for the next Royal Canadian Air Force fighter.