IMO these are just stop-gap efforts in playing catch-up to the F-22 (or even F-35). To go beyond the F-22, you need stealthy unmanned combat aircraft (UCAV). Current developments include the Boeing X-35 and Dassault Neuron:
The technology is still quite new and under development. But the advantages of unmanned air combat vehicle are many. Being unmanned, you don't need to account for pilot weight, life support, cockpit, or limitations on how many G's you can pull before the human pilot blacks out. Computer/combat AI doesn't require many years of flight training, barracks, salary, health benefits, sick leave, or retire after few years to fly 747's for more pay.
In terms of cost savings, a human pilot requires constant training to maintain his/her edge. It consumes a lot of manpower and materials, not to mention wear & tear on the aircraft. Most combat aircraft's airframe can only be used for couple thousand hours without major overhaul, much less time for engines. A UCAV, on the other hand, can sit in a canister for 10 years and only require periodic system check. The cost savings can also translate into additional UCAV's and robotic maintenance & re-arming/re-fueling stations, giving the UCAV user numerical advantage with a disposable platform.
Just as Kasparov was defeated by Deep Blue, in the future there will be no fighter jocks, only nerds (engineers, programmers) and computers.
I guess they can get access to US technology to help them along too.
