The Rudolf Steiner Estate Administration has published two single critical editions.
Theosophy
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.
https://www.steinerverlag.com/de/ska/