> ## Documentation Index
> Fetch the complete documentation index at: https://developers.authlete.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Authlete 2.2 Release Notes - May 2021

##### Version Number : 2.2.8

# Overview of This Release

This is a minor update of Authlete 2.2. It includes the following new or enhanced features since the version 2.2.4.

# Newly Supported Standard Specifications

## OAuth 2.0 Rich Authorization Requests (RAR)

Authlete 2.2 has supported "OAuth 2.0 Rich Authorization Requests (RAR)."
This release includes updates to align with [draft-ietf-oauth-rar-05](https://datatracker.ietf.org/doc/html/draft-ietf-oauth-rar-05).

## OAuth 2.0 Demonstration of Proof-of-Posession at the Application Layer (DPoP)

Authlete 2.2 has supported "OAuth 2.0 Demonstration of Proof-of-Posession at the Application Layer (DPoP)."
This release includes updates to align with [draft-ietf-oauth-dpop-03](https://datatracker.ietf.org/doc/html/draft-ietf-oauth-dpop-03).

# Added or Updated APIs

N/A