This is one I’ve been looking forward to for a while.
Georgi R. Parpulov’s new book, Catena Manuscripts of the Greek New Testament: A Catalogue Texts and Studies, Third Series (Piscataway, NJ; Gorgias, 2021) is open access and has been published. The publisher’s page for the book is here, but a FREE pdf of it is available here.I haven’t read the book in full yet, but I have been able to look at one place. I’ve had a very casual and low-priority interest in Niketas of Herakleia’s Catena in Lucam for a few years now because of one of the sources Niketas used, and when I checked the group of manuscripts I had been looking at (pp. 122–123), Parpulov lists two additional manuscripts that are members of that group that I didn't previously know about.
If you’re not familiar with Parpulov, you should be. When I see his name on the schedule of conference presentations, I usually just plan to drop whatever else I’m doing to go hear him.
As a bonus: here is another one of Parpulov’s publications that is also free: “Kr in the Gospels”, which is a must-read for anyone interested in Family 35.
Congrats, Georgi!