RE: Time for the Eagle to step down.
The F-15E is still in production. In addition, South Korea has recently bought 40 F-15Ks, the first of which is yet to be delivered. The Korean purchase was a win for the F-15 in head-to-head competition with the Rafale, the Eurofighter Typhoon, and the Russian Sukhoi SU-37(?). The Air Force approached Boeing late last year for pricing information on a potential future buy of F-15Es.