Well, everyone calls it Aurora, that came out in a Pentagon budget document and the plane buffs thought it was the codename for the SR-71 follow-up, turned out that 'Aurora' was a fund for some B-2 spending. But the name stuck. People were seeing this craft in the sky, and Aurora stuck.
Whats it really called? Who knows, the A-17? XB-71? Brilliant Buzzard, Blue Eyes? FDL-5?
Heck, who knows what it's offically called. But I still call it Aurora.