I have Release 7, so can't directly tell you what you want to know.
There are 3 things I would like to see in a new release before
upgrading:
1. A Garmin-like gps: the gps in R7 is as primitive as they get.
2. A better power model for the Arrow. The existing power model is
way off (have to use 33" mp for cruise).
3. An option to better utilize the real estate on my 16:9 monitor by
moving the radio stack to the side so I don't have to call it up.

Apart from that, I like the system and use it regularly for IFR
practice.