Postgres Pro Enterprise is the most actual PostgreSQL version with some additional patches applied and extensions added. Mostly, these are patches already accepted by the PostgreSQL community and committed into PostgreSQL. Also there some patches and extensions developed by Postgres Professional. Users of Postgres Pro Enterprise thus have early access to some important features and fixes.
Currently the difference between Postgres Pro Enterprise and PostgreSQL is the following:
CREATE INDEX operation in the GiST, GIN, SP-GiSTpg_shardman module is an experimental extension
that enables sharding, aiming for scalability and fault tolerance
with transaction support. It provides best results for
OLTP workloads.
in-memory module
enables you to store data in Postgres Pro Enterprise
shared memory.
vops module enables vertical data model
for Postgres Pro Enterprise. It can speed up OLAP queries
with filtering and aggregation by times.
Postgres Pro Enterprise releases are following the PostgreSQL releases, though sometimes occur more frequently. The Postgres Pro Enterprise versioning scheme is based on the PostgreSQL one and has an additional decimal place.