AMD has announced via its Twitter feed that the Vega die shrink from current 14 nm down to 7 nm has actually coalesced into a hardware product that can be tested and vetted at their labs. Via a teaser image, the company said that "7nm @RadeonInstinct product for machine learning is running in our labs."Of course, working silicon is only half the battle - considerations such as yields, leakage, and others are all demons that must be worked out for actual production silicon, which may thus be some months off. Only AMD and TSMC themselves themselves know how the actual production run went - and the performance and power efficiency that can be expected from this design (remember that AMD's CEO Lisa SU herself said they'd partner with both TSMC and Globalfoundries for the 7 nm push, though it seems TSMC may be pulling ahead in that field). Considering AMD's timeline for the die-shrunk Vega to 7 nm - with predicted product launch for 2H 2018 - the fact that there is working silicon being sampled right now is definitely good news.