Gartner's 2014 Hype Cycle is out? So where is 3d printing? It is moving slowly down the curve. All technologies are advancing in small steps. Most interesting moment is consumer 3d printing starting to go down from the peak and entering into "Trough of Disillusionment". Gartner's assessment is probably right, there are probably many people who bought a 3d printer and feed disappointed it is not a Star Trek Replicator.
Here is more detailed view focusing on many 3d printing technologies, and it predicts wide adoption of home machines and industrial scale additive manufacturing in 5-10 years range. 3d printing in schools and classrooms is falling behind and will be adopted in more than 10 years according to Gartner.
Here is Gartner's for 2013: http://diy3dprinting.blogspot.com/2013/08/3d-printing-in-gartner-2013-hype-cycle.html
Source and more information: http://www.gartner.com/newsroom/id/2819918