# MinIO RELEASE.2020-01-16T03-05-44Z — Release & Upgrade Intelligence
- **Product:** MinIO (https://min.io)
- **Version:** RELEASE.2020-01-16T03-05-44Z
- **Released:** Jan 16, 2020
- **Impact Score:** 7/10
- **Breaking Changes:** Source flagged
- **Canonical Analysis:** https://changelogs.us/minio/updates/RELEASE.2020-01-16T03-05-44Z/

## Executive Summary (TL;DR)
MinIO RELEASE.2020-01-16T03-05-44Z. Source highlight: ***Breaking Change*** A new error type StorageErr has been introduced. See (#8817) for mote details.

## Breaking Changes & Deprecations
- - ***Breaking Change*** A new error type StorageErr has been introduced. See (#8817) for mote details.

## New Features
- ***Breaking Change*** A new error type StorageErr has been introduced. See (#8817) for mote details.
- Add Cache headers to return hit/miss details (See #8794) for more details
- Add missing SSE_MASTER_KEY_FILE entry (#8800) (Mon Jan 13 12:31:18 2020 +0530)
- Add custom policy claim name (#8764) (Wed Jan 8 17:21:58 2020 -0800)
- Add crypto context errors (#8740) (Mon Jan 6 16:15:22 2020 -0800)
- Add docs for sysctl tuning parameters (#8749) (Mon Jan 6 00:30:04 2020 -0800)

## Improvements
- Healing improvements (See #8470, #8819) for more details
- Notification improvement (See #8772) for more details
- improvements in locking (See #8776, #8818) for more details
- lock: improve locker initialization at init (#8776) (Fri Jan 10 02:35:06 2020 -0800)

## Bug Fixes
- Fix listbuckets in browser in federation (See #8760) for more details
- fix: Hold locks before closing all drives (#8818) (Tue Jan 14 17:13:58 2020 -0800)
- Fix bug preventing overwrite of object (#8796) (Mon Jan 13 17:29:31 2020 -0800)
- Fix Windows console printing (#8805) (Mon Jan 13 13:05:51 2020 -0800)
- fix: set appropriate defaults when new keys added (#8795) (Fri Jan 10 16:57:18 2020 -0800)
- doc: Prometheus metrics name fix (#8774) (Thu Jan 9 18:36:58 2020 -0800)