add libraries preview link

Author: bhearn7

python/python-poetry-multi-stage/README.md

@@ -141,6 +141,7 @@ trivy image python-poetry-cgr:latest
 There you have it! You have now migrated your first application to leverage minimal, zero-CVE base images that are built from source daily by [Chainguard's Factory](https://www.chainguard.dev/unchained/this-shit-is-hard-inside-the-chainguard-factory).
 
 **Next, you can eliminate even more supply chain risk in your applications by utilizing Chainguard Libraries!**
+- PREVIEW: [http://console.chainguard.dev/?feature.libraries=true](http://console.chainguard.dev/?feature.libraries=true)
 
 - [Announcing Chainguard Libraries for Python: Malware-Resistant Dependencies Built Securely from Source](https://www.chainguard.dev/unchained/announcing-chainguard-libraries-for-python-malware-resistant-dependencies-built-securely-from-source)
 - [Guarding the Python Ecosystem Against the Growing Number of Severe Malware Attacks](https://www.chainguard.dev/unchained/guarding-the-python-ecosystem-against-the-growing-number-of-severe-malware-attacks)