Beta MP 1.3.56 Build 1.3.6681.2780 Issues and questions

Downloaded today and used with V3.6.0RC-1. Some issues:
I have my Ch3 and Hdop posted on the HUD- They do not update, though correct values show in Details and T-Log. Hdop shows correctely in Map screen.

Also I nee ( or have just noticed) that the Battery selection have some new things to me. Specifically VoltIR, and a few other things on power and such. Any information on where I read up on these? Or are they just Beta items?.

Yes, battery has been extended and reworked a lot.
Ch3 and Hdop, have not AFAIK been changed, they still come on the same mavlink messages as earlier.