Dave you can change what version stable is running. By default it's automatic, but you can choose an older version if you want, we had to do that at my office because the september release broke our digital signage (cert issue that Cisco is working o...

In order to use presets you need to disable speaker tracking. Once speaker tracking is enabled the camera will use the facial recognition and audio triangulation to choose the shot, you can't use both at the same time. 

If it's a new/factory reset system, there is only one user account, admin, and it has no password by default. Go to the web GUI, users, and change the admin password so it's not blank, and that message will go away. 

As Wayne said - it's still supported and should work fine either registered to Control Hub or CUCM. And sound? Absolutely works, if you use HDMI out of your laptop to the HDMI in port, sound will work and come out of the DX's speakers. You might need...