v5.10.1 User Preview is released.
New Features
HTTPUpgrade transport: It is a reduced version of WebSocket Transport that can pass many reverse proxies and CDNs without running a WebSocket protocol stack. We have a questionnair ready for you once you tried to deploy it. It will help us improve this transport and V2Ray. 新功能：HTTPUpgrade 传输协议，精简版 WebSocket 免去使用Websocket 协议栈的同时还能继续被反向代理CDN转发。在您尝试部署后欢迎填写问卷反馈体验帮助 V2Ray 改进。问卷支持中文。

There was some transient(hopefully) instability of GitHub that shows a 404 result for some of V2Ray/Fly's repo, however, do not panic, we are here to stay and stand with you. 目前GitHub出现了一些临时(但愿) 的异常以至于V2的仓库出现404无法访问异常。不要惊慌，因为我们不屈不渝，与你同在！

v5.11.0 User Preview is released. (stable version)
New Features
Feat: add sniffing for TUN

v5.12.0 User Preview is released. (unstable version)
New Features
Shadowsocks2022 Client Support
Apply DomainStrategy to outbound target
Add DomainStrategy to JSONv5 outbound

v5.13.0 User Preview is released. (unstable version)
New Features
Subscription Manager: added subscription support.

Notice of Behavior Changes of domain-list database

Starting release 20240221053250 of v2fly/domain-list-community, geolocation-!cn no longer includes tld-!cn as changed by commit d59e0d4.

We are planning to release a security update. Please update your configuration to work with v5.13.0 version to receive the security update when it is published. Be aware as an open source project, the vulnerability is disclosed as soon as the fix is released.
我们正在计划发布一个安全更新。请更新您的配置文件至可以在v5.13.0版本中使用以便在第一时间可以接收安全更新。需要注意的是，作为作为一个开源软件，漏洞的原理会在安全发布的同时公开。

v5.14.0 User Preview

## Security Update
• Fixed an encrypted traffic's malleable vulnerability that allow integrity corruption by an attacker with privileged network position to silently drop a segment of traffic from an encrypted traffic stream. Thanks Ellis Fenske for reporting this vulnerability.

-----> ⚠️ Important Message ⚠️<-----
This update includes security fix recommended for all users.
-----> ⚠️ 重要消息 ⚠️<-----
本更新含适用于所有用户的安全更新。

v5.15.0 is released. (unstable version)
New Features
feat: RandomStrategy AliveOnly
Improve container image tags and timestamp

V2Ray has received a security audit from 7ASecurity
https://github.com/v2fly/v2ray-core/discussions/3096

v5.17.0 is released. (unstable version)
New Features
Add timeout for http request roundtripper
Fix ss2022 auth reader size overflow
Add pie build mode to all binary builds
Support "services" root config in cfgv4
feat: packet_encoding for config v4
feat: add MPTCP support
Add (Experimental) Meyka Building Blocks to request Transport

美咔(mekya) 协议前瞻 - 愿光芒散射于风雪

Mekya协议经过数月的断断续续的开发终于完成了基础调试即将发布，本文旨在与快速展示 mekya协议的亮点以推广该协议，并将其与其他同类协议进行对比。

https://github.com/v2fly/v2ray-core/discussions/3129

(Feature Preview of upcoming mekya protocol, English version pending)

v5.17.1 is released. (unstable version)
New Features
Add timeout for http request roundtripper
Fix ss2022 auth reader size overflow
Add pie build mode to all binary builds
Support "services" root config in cfgv4
feat: packet_encoding for config v4
feat: add MPTCP support
Add (Experimental) Meyka Building Blocks to request Transportation

Mekya Protocol Preview have been updated with an English translation.

Mekya Protocol Preview - May the Ray Scatter through the Wind and Snow

This article aims to quickly showcase the highlights of the Meyka protocol to promote it and compare it with other similar protocols.

https://github.com/v2fly/v2ray-core/discussions/3129

v5.18.0 is released. (unstable version)
New Features
Add Hysteria2 Protocol
Add AllowInsecureIfPinnedPeerCertificate option to tls security
Add tls certChainHash command
Add support for socket activation
Add pprof flag for debugging

v5.19.0 is released. (unstable version)
New Features
Add packetEncoding for Hysteria 2

v5.20.0 is released. (unstable version)
New Features
Add ECH Client Support
Add support for parsing some shadowsocks links

v5.21.0 is released. (unstable version)
New Features
Mekya: Add Mekya Transport

v5.22.0 is released. (unstable version)
Maintenance release.