Rob (guitar) has left Boys Night Out. The band had this to say on their website:

Rob is no longer in boys night out. It's a bummer. But it's true. Jeff is simultaneously playing two guitars at the shows every night on the current tour, in an attempt to fill the void. It's really quite astonishing. We're going to get a new guitarist in the new year.

The band will continue on with their current tour with Emery, From First To Last, Gym Class Heroes, and Roses Are Red as planned.