Just found this German news article posted today :
https://www.auto-medienportal.net/artikel/detail/42582
Translates to :
After problems with increased exhaust gas values, Volkswagen Commercial Vehicles (VWN) has stopped the delivery of the T6 with diesel engines and car registration. As the company announced, the vehicles should be available again from mid-February 2018.
Volkswagen has developed a solution to comply with certain technical measurement and limit values of vehicles from ongoing series production. However, this must pass through necessary test, confirmation and official procedures. It will take about six to eight weeks, according to VWN, until the vehicles ready for delivery can be equipped with optimized software.
At the beginning of next year, Volkswagen will also clarify to what extent T6, which has already been sold, should also be equipped with the new software as part of a service campaign. (Ampnet / jri)