In my instance, example projects showed both "Built-in Examples" and "Examples for Arduino MKR WAN1310"
However, when I selected an example, a second IDE opened as expected. Now, on that IDE, only "Built-in Examples" was available. I opened another IDE by selecting an example and again the examples available changed.
On the whole, it certainly appears there are marked improvements in this IDE besides the Beta issues still present. Well done guys, it's looking to be very useful.