Great news and for people who ask them-self the questions but the version is Pg 9.3.1.
Not all Pl are available, and it misses the PL/V8 and PL/Python at least.
And it seems that all fdw (Foreign Data Wrapper) extensions are missing.
But it's a great start, I'm looking forward to try.
If anybody know if we can still access the WAL log then it will be very useful
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_P...