A russian video as been published that compares the new mini-maps in 9.15.1 with the older versions available in 9.15. If you enable subtitles translated to English, you can understand quite well the video.
My personal opinion is that they are way better than the old ones. I always thought the mini-map should be a lot more detailed but in a “planner view” so you can better understand the map and plan you game. If you look at the PS4 version, they are even better, maybe they will move into that direction.