The Rudolf Steiner Estate Administration has published two single critical editions.

Text-critical editions

Rudolf Steiner Gesamtausgabe, the Complete Works, is conceived as a reading and study edition, which does not provide a completed documented scientific text structure. A transparent documentation of every available text variety (including manuscripts, proof sheets, etc) is assigned to historical-critical editions. Whereas in the text-critical or critical editions, the focus lies on philologically transparent text structure or text-genetical comparison of the manuscripts or different editions.
Rudolf Steiner himself, worked on the critical edition of Goethe’s works (referred to as the Weimar or Sophien edition), when he was in Weimar. In relation to his own work, Steiner once made reference to the complexity and growth of his own writings, and about the possibility to read them also under this special aspect:

«A person who makes the effort to study the succesive editions of my „Theosophy“, in order to follow up how I recast the chapter on the repeated lives on earth again and again, precisely to bring their truth to the ideas which the observation of  the sensible world evoked, will find how I strove to meet the requirements of the recognized scientific method » (The Story of my life, GA 28).

The text development in the editions from 1904-1922 in a complete reading version. Edited by Daniel Hartmann, Dornach 2004. 

Documents on «The Philosophy of freedom»
Facsimile of the first edition (1894) with handwritten notes for the new edition 1908, as well as manuscripts, reviews and additional materials. Edited by Dr. David Marc Hoffmann in collaboration with Dr. Walter Kugler, Dornach 1994
Documents on  «The Philosophy of freedom»

Rudolf Steiner, Writings, Critical Edition, edited by Christian Clement
The editor Christian Clement compares and comments the diverse editions of the works of Rudolf Steiner, which were published during Rudolf Steiner’s lifetime. The first volume appeared in the Autumm of 2013, volume 5 «Schriften über Mystik, Mysterienwesen und Religionsgeschichte».
The Rudolf Steiner Verlag took over a number of copies to distribute as part of the distribution’s cooperation agreement.