From: Utopia Planitia Fleet Yards
Well, I am guessing but, with the reduction of the rail repair rate, the Germans may have lower effectiveness when winter comes. So perhaps, the Russian will be more successful in their winter attacks; gaining more experience than previously. Thanks to this, on-map Russian armies will increase experience a little bit faster by replacing their step losses.
And Germans will have to recover a little bit longer before triggering Case Blue. With the new Oka river line, this will also help Russian to slow them down.
Can't wait the next patch.
Chancellor Gorkon to Captain James T. Kirk:
You don't trust me, do you? I don't blame you. If there is to be a brave new world, our generation is going to have the hardest time living in it.