The scroll wheel is still not accurate. I can't do a fast scroll with a different directions. I found this same issue on Reddit ( https://www.reddit.com/r/MouseReview/comments/d6yo5j/anyone_else_having_mx_master_3_scroll_issues/ ). I don't know is this because of the hardware or software but I hope it can be fix by the software update.
The other thing is I still can't use the smooth scroll in all software. It work so well in Google Chrome but it won't work on the other software such as AutoCAD (as my main daily software).
I like the new design of the software. I have to take some times to get used to its new interface, but I think that's okay. But the still same issue is the missing of battery percentage and the numbered DPI setting (rather than the DPI percentage)