Earlier this month, they also announced the Zoom FRC-8, a control surface for the F4 and F8 which allows you to mix more effectively. Larger mixers/control surfaces like this make it much easier to manage the madness that can occur during production. I have one on order and will be reviewing it a few weeks after it arrives.
I expect that this will be a big improvement over the iPad app Zoom has for the F8. While the app is great for metadata entry and setting the gain before shooting, I did not find it to work well when in the heat of a recording. Smoothly moving the faders on a touch screen just wasn't the same because they would jump too suddenly. The FRC 8 also allows you to connect a USB keyboard making metadata entry even faster. Can't wait to try the FRC-8!