For those of you who are wondering (like I was) about what's in the latest update from XLN Addictive Drums 2, I emailed to find out, here was the reply.
 
"The most recent AD2 update was mainly for maintenance. We fixed quite a few bugs and also pushed a new web platform for our XLN Online Installer. Hopefully it shouldn't affect your usage of AD2 at all."
 
So, the beat goes on...