I highly doubt what you've heard is true. It would make zero sense for Go Radio to be on this tour and if they were on it they would be headlining it and almost certainly announced already. Go support your local music scene and see Broadway Calls anyway. They are extremely nice dudes that need/deserve the support.
Haha I'd be much happier if it was a Go Radio headliner. The reason I say that is because a good number of venues and smaller music sites released dates early listing Go Radio as the headliner. But yeah, it's an odd tour lineup for sure.
I just haven't listened to Broadway Calls yet, so I don't know if I want to go on a school night to see a band I may or may not like.