## E.20. Postgres Pro Enterprise 9.6.6.1

Release date: 2017-11-15

### E.20.1. Overview

This release is based on Postgres Pro Standard 9.6.6.1 and Postgres Pro Enterprise 9.6.5.2. All improvements inherited from Postgres Pro Standard 9.6.6.1 are listed in Postgres Pro Standard 9.6.6.1 Release Notes.

Major enhancements over Postgres Pro Enterprise 9.6.5.2 include:

- Improved multimaster extension. In particular, the following changes were introduced:

  - Added a new extension (referee) for managing quorum settings. With this extension, you can set up a standalone referee node for your cluster to assign the quorum status to a subset of nodes that constitutes half of the cluster. For details, see Section F.32.3.3.1.

  - Added a new parameter for choosing a major node in two-node clusters. You can now set up a major node that continues working even if there is no quorum. For details, see Section F.32.3.3.2.