I expected about this much from the Block 3. The only disappointment would be if it lacks HMD/S, a key feature planned since 2015. That said, seeing how the maiden flight is without a radar, it seems the integration and testing work is only beginning now. So, it might be a while before we see a 'fully matured' Block-3. In other words, operationally, the Block-3 may not matter until 2021/2022.
@Falcon26 @Deino
IMO the aesthetic differences may be more related to the nose and front fuselage sharing the same colour than anything else. If the PAF opts for the same shade of grey for the nose and fuselage, it'll look different than what it is now.