Kent Hendricks from Logos Bible Software just brought to my attention that Logos is undertaking the production of a digital version of the Göttingen Septuagint. Here’s a portion of the blurb from Logos:
The Göttingen Septuagint represents the largest Septuagint project ever undertaken. Published between 1931 and 2006, the 24-volume Göttingen Septuagint contains the most authoritative critical apparati of the Greek Old Testament ever assembled. Combining textual evidence from countless manuscripts and ancient sources—including Philo, Josephus, and the Greek Church Fathers—the Göttingen Septuagint is the most detailed and elaborate critical edition of the Septuagint ever published.
The Göttingen Septuagint is the fruit of seven decades of research and publication work. Alfred Rahlfs began the project in the 1920s, and published the volumes on Genesis and Psalms before his death in 1935. William Kappler worked on the Maccabeus volumes before his death in 1944, and Robert Hanhart finished the volume on II Maccabeus and completed III Maccabeus in 1960. Between 1939 and 1957, Joseph Ziegler labored on the books of the prophets—Isaias, Duodecim Prophetae, Ezechiel, Susanna-Daniel-Bel et Draco—as well as Ieremias-Baruch-Threni-Epistula Ieremiae, Sapientia Salomonis, and Ecclesiasticus.
The Logos edition of Göttingen Septuagint contains 24 print volumes divided into 65 resources, with the text of the Septuagint and the critical apparati split into separate files for optimal use in your digital library. In addition to the Greek text and apparati, these volumes also contain a wealth of introductory and supplementary material on the text.
The pre-pub price is $299.95 which seems a bit steep (for a single purchase; not for this set in and of itself), but I imagine that if you have Logos and engage in any kind of indepth study of the LXX then this will be an invaluable resource.