What I see happening is a lot more effects being made/ released.
A big limitation has been they are out of room and processing power,
CK has alluded to the MKI units not having enough processing power for some enhancements, USB audio sample rate conversion being one of them. Although, I doubt we will see sample rate conversion since it's been stated by Kemper that they believe the DAW should do that for you.
It also sounds like the new profiling enhancements have a lot to do with capturing the cabinet in more detail, and I would have to assume that it will take a bit more CPU as well since that is convolution based. To stay competitive, more FX were needed, so throw this all in and I can see why they needed an update.