This is the first preview version of 3.0. we defined 3.0.0.preview as an unstable version in a very early test state to help users and developers quickly understand and experience 3.0 core features. We will continue to work seamlessly with the community to release a more stable version in the future. Please pay attention to our roadmap for the specific time plan.

Check this article for the design of 3.0: https://mp.weixin.qq.com/s/UMhVRA9nje4oEa44U5ibAg
Check here for samples demonstrating the usage of some core features: https://github.com/apache/dubbo-samples

More docs will be ready and published on website

The core functions of the current preview release:

• Application-level service discovery mechanism
• The next generation RPC protocol: Triple
• Brand new routing rule
• Remarkable performance improvement

Upcoming features:

• Kubernetes Service Integration

Functions that are still in early development or design status:

• Proxyless Mesh (xDS)
• Observability
• Back-pressure based dynamic traffic routing