Confused On The U-bahn Frankfurt Route

I just was looking at videos of the U-Bahn route which are awesome but I noticed in the search also that U-Bahn Frankfurt II is out. how does that work with the Dovetail version of this? and what improvements are there. This is confusing because I want to buy it but if version II is an improvement why not have that in the store as well?? Please give some advice on what to do.

Thanks
Keith

 

It's amazing how much you find by Looking

Got to https://store.steampowered.com/app/896715/Train_Simulator_Frankfurt_UBahn_Route_AddOn/
Part way down the right hand side is a link to the Manual
Click on that and a PDF file opens which says "U-Bahn Frankfurt II"
Which is the SAME route sold by Just Trains.

 

Thank you!!

 

I was looking in the store on Dovetail not on steam.

 

It is Always better looking on Steam as there is usually a link to the Manual and more pictures and information than the DTG Store.