We have added Ruhrau 2.0, as requested, to the company. I did stream the map today, it is quite nice map and easy to install. You can find a link to it on our maps page.
You will need like usually the Hamburg DLC (not Hafencity) for it. Additionally you need the Stadler flirt train and MB Facelift pack with Morphi sounds, which our company uses, if you can drive the facelift citaros, you already have it. If I understood correctly, you do not need to download map patches separately if you download the main package after the patches are released.