feat: GA (#485)

Author: astuyve

README.md

@@ -12,21 +12,15 @@ Follow the [installation instructions](https://docs.datadoghq.com/serverless/ins
 
 ## Next-generation Lambda Extension
 
-We're excited to share that our next-generation, low-overhead Lambda Extension is available for Beta testers. This new extension is packaged alongside our existing extension, yet offers substantially faster cold starts as well as lower resource consumption.
+We're excited to share that our next-generation, low-overhead Lambda Extension is now generally available. This new extension is packaged alongside our existing extension, yet offers substantially faster cold starts as well as lower resource consumption.
 
-You can opt in to the Beta by setting the the environment variable `DD_EXTENSION_VERSION: next` and using extension version `v63` or later.
+You can opt out of the next-generation Lambda Extension by setting the the environment variable `DD_EXTENSION_VERSION: compatibility` and using extension version `v67` or later.
 
 ### Supported Configurations
 Today, all workloads using Logs and Metrics are supported.
 
-APM Tracing is supported for Python and NodeJS.
-
-Go, Java, and .NET support is coming soon. Profiling and ASM are not yet supported.
-
-### Beta Limitations
-The next-generation Lambda Extension only supports [certain environment variables](https://github.com/DataDog/datadog-lambda-extension/blob/main/bottlecap/src/config/mod.rs#L19-L51) today. It does not yet support yaml-based configuration files.
-
-If an unknown configuration option is detected, the next-generation extension will fail-over into the existing mainline extension.
+APM Tracing is supported for Python, NodeJS, Go, Java, and .NET runtimes.
+Profiling and ASM are not yet supported, and will fallback to compatability mode.
 
 ### Feedback
 We'd love to hear your feedback on the next-generation Lambda Extension. You can open a GitHub issue here using the `version/next` tag, find us on the [Datadog Community Slack](https://chat.datadoghq.com/) in the #serverless channel, or reach out to me directly at [email protected].