I'd love one, but I'm not holding my breath. Even when 4K screens are the norm I doubt Apple will bring back such a niche form factor. I'd love to be surprised though, I think next year is when I finally retire mine.
Not necessarily. It's most likely the hardware of the iPhone 5S that allows the Filmic app to be able to record in the robust codecs (at broadcast acceptable 50mbps versus the usual c.17mbps from the Camera app) that enables the footage to then be post-processed to the level required for this kind of destination.