A new book of interest has been published: Die Johannesoffenbarung: Ihr Text und ihre Auslegung (eds. Michael Labahn and Martin Karrer; Leipzig: Evangelische Verlagsanstalt, 2012) and the first section has a number of text-critical articles under the heading "Text/Textgeschichte:"
Markus Lemke, "Beobachtungen zu den Handschriften der Apokalypse des Johannes"
Martin Heide, "Die syrische Johannes-Apokalypse. Zum gegenwaertigen Stand der Forschung."
Juan Hernandez Jr., "Recensional Activity and the Transmission of the Septuagint in John's Apocalypse. Codex Sinaiticus and Other Witnesses"
Michael Labahn, "Die Schriftrezeption in den grossen Kodizes der Johannesoffenbarung."
Daniele Tripaldi, "'Discrepat evangelista et Septuaginta nostraque translatio' (Hieronymus, Briefe 57,7,5). Bemerkungen zur Textvorlage des Sacharja-Zitats in Offb 1,7"
The last section of the book (IV) is titled Die Johannesoffenbarung in den grossen Bibelkodizes and includes German translations of the text of Revelation in the individual codices Sinaiticus, Alexandrinus and Ephraemi, as well as an introduction to them by Martin Karrer.
In recent research, the Book of Revelation, the history of its text and interpretation have attracted increased attention. The anthology pays tribute to this development by publishing the proceedings of a recent conference at the »Kirchliche Hochschule Wuppertal/Bethel«, supplemented by a number of additional seminal articles.
Focusing on philological and exegetical issues and employing a variety of methodological approaches, the book covers the main fields of current research: textual transmission and scriptural reception, problems of the history of religion, imagery, aspects of hermeneutics, exegesis, impact, and literary structure as well as the latter’s linguistic and religious conception, and finally the reciprocal relations of text and reader seen from a psychoanalytical perspective. The contributions show that continuous revisal of previous exegetic suppositions is a necessary and useful means to deepen our understanding of the Book of Revelation.
The book can be ordered from Eisenbrauns here.