There was a class scheduled for June 20 that was "cancelled" (pushed back to the next class date). No word on why, but my guess would be something to do with summer training issues. That will ripple through all the subsequent classes, and all the way back to where you're at.

If it's any consolation, there were guys in my interview group who did the video interview in January 2015 and didn't get the call for a face-to-face until November. This was due to a similar issue where the flows had to be accommodated in training, so all off the street hiring was put on hold for most of the year.