I bought the following Greek-German lexicon on pre-pub which I understood to be a 21st century edition based on the product page description which included the following: "Erscheinungsdatum: 1988 (6. Aufl. 2012)"
But the "Citation" from the "Information" panel for the 6th edition states: "Bauer, Walter. Edited by Kurt Aland and Barbara Aland. Griechisch-Deutsches Wörterbuch Zu Den Schriften Des Neuen Testaments Und Der Frühchristlichen Literatur. Berlin; New York: Walter de Gruyter, 1988."
This confusion saddens two people: my wife on this our 61st anniversary who suggested I return the book; and me, who wanted a more recent lexicon than BDAG. Spoiler alert: I'm keeping the book