Right out of the box, there's a difference between the IP Duo-60 and the IP Ultra 60: the pressure control and relief valves. The system is more automatic than before. There's a warning tag with a tie around the relief valve; it's difficult to miss.
I decided to try the pressure-cooking mode first. It really is a set-and-forget mode. I've been working lately with equipment that requires pushing a knob, turning it for a different mode, pressing it again (and so on) so I had no trouble with the controls. There are instructions for those who don't find it as easy, but I'll be happy to provide more detail for those interested.
Maybe it's just because I like progress reports (although I hated them when required to give them to my bosses) but I really like the screen that shows the status of the program. It's bright and easy to read: what mode, how far along, and what's happening inside? At this point, the pressure was building. The timer had not started, and would not start until the pressure had reached the "high" point. Note the difference in the graph between the right and left photos.
The bottom snap in this collage shows that the pressure "button" had closed and pressure was on the rise.
After the pressure reached the set point, the timer began.
...and because I wandered away to do other household chores, it kept track as the temperature and pressure dropped after the cooking time had elapsed. In this photo, it was done cooking and had switched to the "keep warm" cycle as the temperature and pressure dropped.
I don't have photos of the steam release, because I don't have enough hands, but I will say that after allowing the pot to sit for 20 minutes on natural release it was as uneventful as with my IP Duo-60...and it was easier, because I simply had to push a button down instead of twisting a valve. I still took the precaution of covering the vents with a towel.
The last test I did tonight - and, alas, the last test I'm likely to do for a couple of days - was to see what this IP Ultra 60 thinks it can do for temperature control in slow cooker mode.
If it can really accomplish this range of temperatures, it will be a marvel. Tests to come in a day or three.
Tests of the other functions need to come along too. What would y'all like to see? The idea is to put my IP Duo-60 and this IP Ultra60 alongside each other and compare their performance. I have enough kitchen circuitry for this feat. The electrician who wired this kitchen would be proud. 
