McFish, based on everything investors have been told all the way back to ECOC Sept 2018 with Tier 1 comments "you guys are in the forefront now", to PkM materials off the charts performance measures late Feb 2019, to beating out Intel, Infinera, Broadcom and Rockley for Best Achievement in a PIC Platform at one of the largest International Photonics conferences in the world and voted on by nearly 10,000 industry insiders in March 2019, to the ASM May 2019 where Dr Lebby now maintains and regularly updates Revenue forecasts, seems to me the answer is soon, as I already said, the keys to the deals are
1) PkM Reliability testing
2) 100Gbs optimized
Both of which should easily be complete by end of 2019