Synoptic Edition of Avot de-Rabbi Natan
I just saw that Mohr Siebeck (i.e. VERY expensive) has published a synoptic edition of Avot de-Rabbi Nathan. There are synopsis of the MSS for both versions A and B, including Genizah fragments. One of the editors, Hans-J黵gen Becker has already helped to publish the Genizah fragments of Avot de-Rabbi Nathan (see a review here). Some of you may have already seen this edition, but I was not aware of it until now.