I think it is great that you are implementing more statistics for developers, numbers are great. But do you want to know another thing that I think would be great? Illustrations, in this case for example graphs.
Graphs like this would enable you to see when your “game update” was most popular in a certain time period. Perhaps it could show statistics according to age as well? In that way developers could see if they need to reformulate their game updates to better fit the target audience (i.e. if the target audience is from the age of 6 to the age of 12, then you would want to simplify the message as much as possible for them to understand it).
This seems like a good step in the right direction for statistics, but like @Rawbyte suggested there should be more ways to view your statistics. Is there any chance we will be able to view the amount of people currently following the game (and a graph to display along with it)
Second, being able to see the play rate was a crucial addition to update notifications. Will we ever have access to this stat for ads and sponsorships, rather than just the click-through rate?