You will find the lastest prerelease service pack in general within your combit account for download.
The sample works with the classic List & Label version for Windows. You are mentioning the new cross platform version. I think the packages are updated in another way there - found that:
New NuGet server for LLCP packages
As I remember the installed samples are working with hard references - the assemblies directly from installation directory are used - not the NuGet packages.