# MinIO RELEASE.2019-09-18T21-55-05Z — Release & Upgrade Intelligence
- **Product:** MinIO (https://min.io)
- **Version:** RELEASE.2019-09-18T21-55-05Z
- **Released:** Sep 19, 2019
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/minio/updates/RELEASE.2019-09-18T21-55-05Z/

## Executive Summary (TL;DR)
MinIO RELEASE.2019-09-18T21-55-05Z. Source highlight: Rolling upgrade is not supported in this release, due to changes in StorageAPI. See (#7932) for more details.

## New Features
- Add rootCAs support to Kafka & MQTT (#8236) (09/18/19)
- Add notes on configuring LDAP STS with Microsoft Active Directory (#8260) (09/17/19)
- Add ability to test drive speeds on a MinIO setup (#7664) (09/13/19)

## Improvements
- Major performance improvements to S3 select upto 14x. See (#8238 and #8261) for more details.
- Remove size query parameter from PerfInfo handler (#8258) (09/18/19)

## Bug Fixes
- Regeression fix for deployments running in erasure mode and encrypted multi-part putobject API. In very rare cases due to a race condition, some parts might end up being stored unencrypted on the backend. Users are advised to upgrade immediately. Please see (#8241) for more details.
- Regression fix in etcd watch in IAM subsystem. See (#8224) for more details.
- Regression fix in listobjects on Ubuntu 14.04 with XFS. See (#8240) for more details.
- Fix auto-healing crash for very large number of objects. See (#8239) for more details.
- In HDFS gateway fix non-empty folder behavior (#8254) (09/18/19)
- xl: Fix verifying non streaming highway algo with a dist setup (#8230) (09/12/19)