That's not necessarily true, scheduling is usually done to the end of a week, not the end of a month. In this case, the 25th is the last Saturday in May. I'm willing to bet that the next time hours are updated for these places, they will go to the 29th of June, not the 30th. I guess we'll see...
I finally took the train for the first time last fall, it was a nice ride back to Rafiki's. I personally don't see them getting ride of the train there unless there are some massive plans that will eliminate Rafki's to the general public and keep it as a "backstage" area.