Bruce Momjian, one of the PostgreSQL Core members, just compiled the first draft version of the release notes for the upcoming PostgreSQL 9.5
Some of the goodies that will show up:
- BRIN indexes (comparable to exadata storage indexes)
- Upsert (known as merge statement in the oracle world)
- grouping sets
- … any many, many more…
If you want to test any of the new features check this post.