From Kitplus:
… The E2 Flagships.
These new cameras feature a new and slightly bigger body that takes feedback from original E2 users. You can currently choose from 3 different sensors which all come housed in the same small and modular body. The S6, which is a Super 35 6K sensor, the F6 which is a Full Frame 6K sensor & the F8, which is a Full Frame 8K. All three of the cameras feature dual native ISO, both the S6 & F8’s being 400 & 1250 and the F6 being 400 & 2500. The S6 is a great entry point into the flagship series, the sensor performs very well with great colour and dynamic range. However, if you have the extra the F6 is a no brainer. The increased sensor size doesn’t just mean you get the full-frame look, you also get a nicer image with improved dual native sensitivity and high ISO performance. The F8 is there for shooters prioritising resolution above everything else and if you don’t need 8K the F6 is a better choice.
Read more here.