update readme with discord server invite link (All-Hands-AI#828)

README.md

@@ -211,7 +211,12 @@ For details, please check [this document](./CONTRIBUTING.md).
 
 ## 🤖 Join Our Community
 
-Join our Slack workspace by filling out the [form](https://forms.gle/758d5p6Ve8r2nxxq6). Stay updated on OpenDevin's progress, share ideas, and collaborate with fellow enthusiasts and experts. Let's simplify software engineering together!
+Now we have both Slack workspace for the collaboration on building OpenDevin and Discord server for discussion about anything related, e.g., this project, LLM, agent, etc. 
+
+* [Slack workspace](https://join.slack.com/t/opendevin/shared_invite/zt-2etftj1dd-X1fDL2PYIVpsmJZkqEYANw)
+* [Discord server](https://discord.gg/VXe4K5yumM)
+
+If you would love to contribute, feel free to join our community (note that now there is no need to fill in the [form](https://forms.gle/758d5p6Ve8r2nxxq6)). Let's simplify software engineering together!
 
 🐚 **Code less, make more with OpenDevin.**