diff --git a/README.md b/README.md
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--- a/README.md
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@@ -2,9 +2,11 @@
 
 ![screenshot](./imgs/textual.png)
 
-Textual is a TUI (Text User Interface) framework for Python inspired by modern web development.
+Textual is a TUI (Text User Interface) framework for Python inspired by modern web development. Currently a **Work in Progress**.
+
+
+> ⚠ **NOTE:** We ([Textualize.io](https://www.textualize.io)) are hard at work on the **css** branch. We will be maintain the 0.1.0 branch for the near future but may not be able to accept API changes. If you would like to contribute code via a PR, please raise a discussion first, to avoid disapointment.
 
-**NOTE:** This project is currently a work in progress, but usable by brave souls who don't mind some API instability between updates.
 
 Follow [@willmcgugan](https://twitter.com/willmcgugan) for progress updates, or post in Discussions if you have any requests / suggestions.