We are working on second edition of PostGIS in Action 2ed for availability sometime in March 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. Each purchase includes all E-Book versions including E-book version of 1st edition.
PostgreSQL: Up and Running, 2nd addition came out in December 2014 in Print (both Hardcopy and E-Book). It is also available on Amazon
. The focus of 2nd edition is PostgreSQL 9.3-9.4 and the content has increased by about 60 pages from first edition.