They won't be mentioning PTK by name.  But yes I think we can infer poet are part of their products.

From oct 10th

POET, SPX and YST will initially collaborate on 100G CWDM4, POET ONE, 100G LR4 and 200G FR4 transmitter products. All the design verifications and reliability testing of the optical engines is complete and all will be released to production this month. Current module customers for these products include ADVA, Beijing FeiYunYi (BFYY) and Fibertop, along with others whose names have not yet been disclosed.