Last I heard was early 2016. I can't find the old PH-180 part number (6-22983) on the shipping schedule. Could they have possibly changed the part number with the rumored revisions to the PH-180s?
A search for 6-22983 from the magnifying glass revealed the PH-180 and 'Most Recent Catalog 2016' was in the description that was found. Looks like the same part number, but I sure can't find it on the shipping schedule.