Update main page

Author: pwseg

src/segment-app/extensions/index.md

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 title: Extensions
 ---
 
-Extensions integrate third-party tools into your existing Segment Workspace to help you automate tasks. Using Extensions, you can sync models with dbt labs and manage versioning for Segment Workspace changes using Git repositories.
+Extensions integrate third-party tools into your existing Segment Workspace to help you automate tasks. 
 
 > info ""
-> Extensions is currently in public beta and is governed by Segment's [First Access and Beta Preview Terms](https://www.twilio.com/en-us/legal/tos){:target="_blank"}.
+> Extensions is currently in public beta and is governed by Segment's [First Access and Beta Preview Terms](https://www.twilio.com/en-us/legal/tos){:target="_blank"}. During Public Beta, Extensions is availability for Team and Developer plans only. [Reach out to Segment](mailto:[email protected]) if you're on a Business Tier plan and would like to participate in the Public Beta.
 
+During public beta, Segment offers the following extensions:
+
+- [dbt models and dbt Cloud](/docs/segment-app/extensions/dbt), which let you sync models with dbt Labs
+- [Git sync](/docs/segment-app/extensions/dbt), which you can use to manage versioning and track changes in your Segment Workspace