Article says 'waiver', but since it was a short term, maybe only one time, action, I'm thinking it was actually an authorization. And no 3D robotics waiver is listed on the faa website. Still, shows that it can be done.
I'm pretty sure the writer got his "terms" mixed up. I'd bet that was an authorization and not a waiver. I can't see them giving an Airspace Waiver to THAT airport or really any BRAVO airspace at least not this early.