Hopefully even if most their code is in C++ , its still just compiling the source files in Xcode for the new universal binary 2.
Im working on that for a couple self built apps, so nothing major like Nuendo.
Whats kinda cool is now iOS and iPad apps will run on macOS , so that opens up new ideas in remote control apps.
Imagine a remote app that you can be on a plane, take a track from the project at home, mix or edit that track on the iPad and send that edited track back to the project at home.
Thats what I want CubaseIC Pro to be !! Like GIT / SourceTree for audio almost.