We are glad to announce the publication of the latest (3rd) edition of this resource:
M. Jeffreys et al., Prosopography
of the Byzantine World, 2016 (King's
College London, 2017) available at http://pbw2016.kdl.kcl.ac.uk. ISBN: 978-1-908951-20-5
Do please encourage your librarian to add it to the library catalogue.