For those who are interested, the updated app seems to be working well. I made a quick test program and got phone notifications for smoker high temp, food high temp, and step end. Only thing is it didn't always seem consistent in keeping the messages updated if I didn't have the phone and app open, but there are probably some other phone settings to play with.
All in all, a very nice addition, and good to see Auber is interested in keeping a good customer experience