Not much more.Anymore info on this TSB?
All I recall is them telling me that VW originally had the sealant changed and to be applied to the spark plug rings and the outer sealing points between the head and girdle only, but was eventually revised to include the entire contact patch. This would later include the inner portion of the contact too, such as the ports coming from/going to the oil pan/crank case/PCV drain port, etc.
I know the red sealant was replaced by the green one but I don't know if there is a newer one and or if all this info is on the same TSB. It's likely there is more than one.