Rokuhan has started development of containers for their container flat. So 31 ft and 40ft to start and with detail ends like MCZ and AZL. http://www.rokuhan.com/english/news/2012/09/40ft-marine-containers-and-31ft-containers.html I do not have any info on whether they will match the stacking pins and sockets of Marklin, Micro Trains, MCZ, and AZL for stacking, but I did say they should ensure they are compatible with existing stock from AZL, Micro Trains and Marklin, if they are going to sell into North American, and European markets. I know that they are working on a Japanese Container flat for the Japanese market, but can't find a picture of it on their web site any more. cheers Garth
http://www.rokuhan.com/products/train/ near the bottom of the page on the Japanese version of the site. picture of Japanese Container flat is here. http://www.rokuhan.com/products/train/# cheers Garth