Old Tarmac s-works VS new SuperSix EVO

I am considering a new bike.
I currently ride a 2011 tarmac s-works sl3 with 1100g tubular race wheels, rim brake obviously (around 6.8kg).
My new bike option is the new SuperSixEVO Hi-Mod Ultegra di2 2020.

In your guys opinions, will I gain performance in switching for a modern semi-aero, disc, wide wheeled, thru-axles, di2, heavier bike?

My main goal is rolling/hilly longish road races, I am looking at pure performance above all else.

Thanks !