Even thought the quantity procured is considerably small but
each individual will be integrated and packed with sophisticated
components that unquestionably reffirm her credibility way into the
next decade.
This is extracted out from http://militarynuts.com
from YourFather. 
Singapore is in negotiation with Boeing for an F-15E with a
Raytheon APG-63(V)3 AESA radar and electronic warfare
capabilities.
Meanwhile, Boeing is looking at an F-15E-Plus with improved
avionics and the latest version of the AESA radar. The company also
hopes to sell a version to Singapore that is almost as
advanced.
"The AESAs in the [F/A-22 and upgraded F-15s] are equivalent," says
George Muellner, Boeing's vice president and general manager for
Air Force systems.
"[The F-15E-Plus] is focused around the [APG-63(V)4] AESA, some
broadband connectivity to the airplane, having broadband data
movement throughout the aircraft's bus structure in a digital
electronic warfare system," Muellner says.
"The bid to Singapore is different from the existing F-15E because
it has the AESA on it [as well as] a digital infrared upgrade and
some other things," Muellner says. "It's edging toward that
F-15E-Plus configuration, but not quite there."
