Thanks.

Would be nice of them to have some release notes. Off the top of my head things that should be fixed:
-Screen tearing
-Voices too low during certain sequences
-Scratchy audio after powered on for several hours
-Time and date not set error

I thought I heard that the shading/contrast was better on the updated version and it was easier to see detail?

Anything else I'm forgetting?

They are on the page now:
http://chicago-gaming.com/mmr_update.php

V2.0.1 RELEASE NOTES

This version includes the following enhancements and bug fixes:

1) Next generation graphics engine to support full color display upgrade and address previous screen tearing issue.
2) Addition of Castle Multiball jackpot voice call
3) Modifications to real time clock
4) Addition of adjustment for controlled playfield LEDs
5) Addition of adjustment for trough coil strength
6) Resolution of audio crackling issue

Nothing about the low voice audio level.

Yeah, that seems to be right. It is mainly the castle kings. Although I also seem to remember some of the jackpot callouts being low during one of the multiballs, maybe it was catapult? Regular multiball jackpot callouts are fine IIRC. My game is on location so I can't easily check.

Yes, happened to me and others. Seemed like it hit us all around the same time after we updated. Has only happened once to me since the new release.