I found an older question and answer about this, and after some searching I have found no further updates, and no mention of PPPS on any of the specifications pages for your products. (Did I miss something?)
A very small number of USB hubs on the market support PPPS, but there appears to be growing demand as embedded computing and USB-powered devices proliferate.
Has Plugable dropped all support for PPPS in its products at this time? If so, and you have no plans to serve this niche in the future, can you please suggest alternate vendors?