# Release Notes

ESS 2.5.0 Released 2025-06-26

## Message Security Enhancement

Encryption for messaging was enhanced with an update to the key derivation algorithms. Existing messages remain fully accessible during a migration of the encryption standard.

## Resource Change Notifications

Users and operators can now use the Notification Service HTTPS API to subscribe to notifications from the Storage Service. This is an additive, backwards-compatible change to the released notification subscriptions API. New event types are supported by the Notification Service, and a new authorization mechanism has been added to subscribe to notifications about resources using an Access Grant.

The Storage Service generates events for each of the following:

* A resource is created
* A resource is modified
* A resource is deleted
* A container is created
* A container is modified
* A container is deleted

For more information, see Notification Delivery Service.

## Patch Releases

### 2.5.1

Released 2025-07-09

### All Services

Metrics and health status endpoints are now available within the ESS cluster on port 9000.

## Changelogs

For changelogs, see [2.5 Changelogs](https://docs.inrupt.com/ess/2.5/releases/changelog).