No details except these are listed on Amazon Germany [[and interestingly, they are listed as "imports"):

Diana Ross [[23 discs):

http://www.amazon.de/Complete-Motown...bum+collection

Jackson Five [[15 discs):

http://www.amazon.de/Complete-Motown...bum+collection

Marvin Gaye [[25 discs):

http://www.amazon.de/Complete-Motown...bum+collection