[sheff]

The linked post says : "I think we shouldn't release 9.4 unless it goes in."

I haven't been following the PG developers mailing list that closely recently and the article doesn't go into any details as to why it may be delayed.

From the link that @masklinn posted (Thanks, very interesting!) to a hstore presentation, it looks like the hstore side was developed by November last year, so I'm wondering why it wouldn't be ready for release by this September or whether its just the integration of hstore/JSON side of things that is the hold up.

For me, the new PG feature - although its an outside project - which I am most looking forward to in the 9.4 time frame is a newer JDBC driver for Postgres ( https://github.com/impossibl/pgjdbc-ng ).

[masklinn]

http://postgresql.1045698.n5.nabble.com/jsonb-and-nested-hst... seems to be the relevant threads. Apparently there are issues over wire format, and jsonb being in core (and unless I'm misreading things jsonb is to be a new type separate from json, which is unwelcome news, I didn't know about that although it does make sense from a "binary copy of database files" sense)