We are working on second edition of PostGIS in Action 2ed for availability sometime in late 2014 (or early 2015). Early purchase review (MEAP) is now available for Second Edition: All 17 chapters now available on MEAP with code and data download on PostGIS In Action Edition 2 Chapters. With MEAP you can get chapter updates as we write/update them and get the final polished copy at release time in both E-Book and Hard-copy form. Each purchase includes all E-Book versions including E-book version of 1st edition.
PostgreSQL: Up and Running, 1st Edition is out in both E-book and hard-copy. You can order hard-copy now from Amazon or Kindle or hard-copy or e-Book from O'Reilly. We are hard at work on the second edition of PostgreSQL: Up and Running, 2nd addition as well. The 2nd edition is feature complete and E-book draft version is available now direct from O'reilly. Hard copy will be out 4th quarter 2014 and with focus on PostgreSQL 9.3-9.4.