Not by a long shot.
http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Delectronics&field-keywords=4k+tv
Maybe Disney just didn't sell enough $45 copies of the 3D-only Oz the Great and Powerful and assumed that people weren't interested in 3D. 'Cause, you know, if people were...