I'm sure this has been reported before but it is new information to me about my 430N on my 2012 JKUR.
I missed have the altititude info and the large digital speedo on the 430N since my wife had it on her 2011 GC with the 730 radio. Over the weekend I started looking for a solution and did not have the owners manual with me so I started pushing various buttons in my search.
On the navigation screen where it shows the current speed limit for your currently traveled highway and your current speed (in red if you exceed the limit), I hit that area of the screen and up popped a new to me screen showing the altitude, running hours, stopped hours, large didital speed readout and various other pieces of information. There is also a dropdown for a little more information.
I just thought I would mention this as I like having the altitude displayed. I did the update on the disc Chrysler recently sent out so I'm not sure if this played a part in all of this or not. I did do a search for the new items folks have found out about their JK's but did not find it so sorry if this is a rehash of known information.