The website of Melzer & Hopfner says that it's planned to be build in 2014.
We will see!

Is it sure that the Steinbergbahn is coming?
I asked a lot of people in Leogang and they said that's coming this year. An employee of the Kralleralm said that the Steinbergbahn is going between the Kralleralm and Krallerhof (hotel). The "Talstation" is coming on the place of the Kart racing thing ...