Cardinal Kurt Koch, head of the Pontifical Council for promoting Christian Unity said the document - "From Conflict to Communion" - was being translated into other languages.
The document will describe the conflict from the historical point of view as well as what has been achieved through ecumenical dialogue in the last 50 years - "where we were able to detect unity, where we have found things we have in common and where obstacles remain", Cardinal Koch said.
Cardinal Koch said many events involving Catholics and Lutherans are planned, especially in Germany, for the year 2017, the 500th anniversary of Martin Luther posting his 95 theses to the door of Wittenberg Church.