# Dify 0.3.15 — Release & Upgrade Intelligence
- **Product:** Dify (https://dify.ai)
- **Version:** 0.3.15
- **Released:** Aug 23, 2023
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/dify/updates/0.3.15/

## Executive Summary (TL;DR)
Dify 0.3.15. Source highlight: feat: add spark v2 support

## New Features
- feat: add spark v2 support
- feat: server xinference support
- feat: add openllm support
- feat: support app rename and make app card ui better
- feat: optimize error record in agent
- feat: optimize override app model config convert

## Improvements
- build: improve dockerfile
- chore: perfect type definition

## Bug Fixes
- fix: promptEng menu in wrong place
- fix: get_num_tokens_from_messages params error
- fix multi thread app context
- fix: web dockfile
- fix: wenxin error not raise when stream mode
- fix: error raise status code not exist