After the Su-33 and Su-37 comes the Su-35S. This aircraft is the newest one in the Flanker family and features a glass cockpit and thrust vectoring.
This is not a modification of the other Flanker mods, but rather a completely new convert. It lacks the forward canards and also has a different armament containing R-73, R-77 and KH-31 missiles. Includes completely new cockpit and 4 skins.
When compared to the Su-37, these are differences of the real life aircraft:
-complete glass cockpit
-different landing gear
-different set of pitot tubes
-no forward canard wings
-different shaped tail boom
-different shaped vertical tails
-minor difference regarding the nose shape