I'am planning on getting the kontrol s61 mk3 and I want to know if it's compatible with Cubase 10.5 if yes how is the integration ?
This video will give the answer and it may help you a lot... it is from 2017, Cubase 10.5 was released at November 2019, so, the Cubase version on the video is older... and as you will see, it works fine...
so, yes, it is compatible and you can do everything you need! :-)
It will work, at least as a controller. There will be no native integration of course, but you can still create manually some basic integration.
Will I be able to use the transport functions and change tracks from the midi controller?