Every year the MICHEL publisher, Schwaneberger Verlag, publishes a revised edition of the cataloguing of all European stamps, updating the price appraisals and adding new facts and details. In 2020 the 105th Edition of the Europe series will be newly subcategorized and published in 16 volumes.
All MICHEL volumes will grow in size with each new edition due to the fact that additional stamps, information and pictures require more space. In particular the seven Europe volumes have lately become so extensive that readers have found it increasingly difficult to use them. And printing shops will eventually find it challenging to print 1700-page hardcover books. For that reason, starting in 2020,the Europe series will be published in 16 volumes.