There are no campaigns created yet. Anyway, the mod comes with some new scenarios included:
*Chojnice, Poland (German Mission)
*End of the Line (Russian Mission)
*Road to Berlin (Allied Mission)
*DAK Mission (German Mission)
You can play these missions by installing Phase 3 mod and its updates up to 1.31. They are available as scenarios (the campaign mode is left as it was in Phase 2 for now). More updates including new missions will be featured in the future releases.
More info here and the game's manual is here.
If you have anymore questions, don't hesitate to ask.