Full list of "What's new in PostgreSQL 9.5" - https://wiki.postgresql.org/wiki/What%27s_new_in_PostgreSQL_...

A lot of goodies around JSONB additions. In 9.4, there wasn't much support for updates to JSONB values, but now there will be some support for document-esque operations:

- jsonb || jsonb (concatenate / overwrite) : combine 2 jsonb objects and if there's overlap, values are replaced at the highest level

- jsonb - text / int (remove key / array element) : remove key or an array element

- jsonb #- text[] / int (remove key / array element in path) : remove key/array at path - jsonb_set function : update value at path