I received the GSOC today and checked it out.

The screen is very nice, and I like the way it works mostly, you can control it with a mouse and click on options and signals, or touch the screen.
Options are limited so far, some things seem to not work yet, and it has the same issue with the AGC, things sound bad with it on, and very good with it off. Not as bad on CW or SSB.
There is no rf gain that I could find, there is on the small head of the G90.
These setups seem to have the radio hardware in the body, and the head units have the sdr stuff in them, using the IQ output of the main body.
The microphone into the GSOC seems to need the mic gain turned up high, and then it picks up a rumble, this does not seem to be the case
with the standalone G90 radio.
Audio on AM goes out to 6.5 Khz for a bandwidth of 13 KHz on the air.
No sync detection for AM.
Filters can be whatever you want, and there is an 6 or 8 band EQ on RX and TX.
I noticed something odd, the GSOC uses a DB9 connector to the G90 body, and the radio works with just that, but you get no
RX bandscope or waterfall. But you do when you transmit.
If you plug in the IQ cable between the GSOC and the main body, you get the RX scope working.
With the dummy load connected, you get a small bit of hash in the center of the bandscope, which goes away if you unplug the IQ cable, so there is some noise coming from the main body.
AM modulation is good to about 75% both ways, but it sounds good and clean except for the low rumble when the mic gain is high.
The radio also has line in and out ports, but its an odd connector and I have not experimented with it yet.
I expect software updates to add and improve things over time, they seem to update quickly.
The waterfall needs a bit more contrast or range and the AGC really needs to be fixed, and then it would be a very nice receiver.
The transmitter can be good if they increase the modulation a bit.
Seems ok on SSB, I did not check cw yet, I hear there is a lot of latency so far.