3D is now obsolete?

I've never been a big concert goer, but my god, do I wish that I was at Coachella this weekend to witness firsthand the future power of holography.  Sweaty dirty types were treated to a full blown holographic performance from Tupac as he first performed a solo, then joined Snoop Dog in a rendition of one my favorites, "Gansta Party."  This is really futuristic, cutting edge entertainment.  Think of all the applications that holograms will bring us.