Is Slimbox still in the prototype phase?

No. But starting production is something that takes time. This was planned from the beginning and we are very proud that all is still going exactly as we hoped. That is why we will only be able to ship the first  machines by September 2017. However, after our proof-of-concept, we built a few prototypes. The machine is fully operational and works as shown in the videos or images. No special effects have been added.