Sebastien Roblin
In June, the U.S. Navy released a budget allocating $264.9 million towards upgrading its roughly six hundred FA-18E and F Super Hornet and EA-18G Growler fighters to the new Block III standard, which includes some of the enhancements proposed for the Advanced Super Hornet. This is intended to coincide with a service-life extension program (SLEP) meant to increase the type’s flight hours from six thousand to nine thousand. The first of the upgraded aircraft are expected to enter service in 2019, and the Pentagon is now talking about keeping its Super Hornet fleet active through 2046.
A few days later, the Navy also announced plans to purchase an additional eighty Super Hornets over the next five years for $7.1 billion. All in all, it would seem that Boeing has successfully redirected defense dollars away from the expensive new F-35 stealth fighter by emphasizing the lower price of maintaining the Super Hornet fleet.
http://nationalinterest.org/blog/the-buzz/the-f-35-f-18-super-hornet-the-ultimate-military-combination-22738