Hey FJ, development of this may go back a ways.  I recall the company mentioning working on a 16 lane (wavelength) project but don't remember specifics; perhaps discussed at 2018 AGM. One of your posts makes reference to it:

 
FJ: "They are optimizing the interposer not just for 100G but for a one size fits all platform. I believe that if they are going to work with 16 lanes and are not constrained by frequency then they are working with that company on terabit level applications. "

https://agoracom.com/ir/POETTechnologies/forums/discussion/topics/710172-agm-impressions/messages/2198143#message