README: Update current status and add next steps

README.markdown

@@ -1,10 +1,19 @@
 # Sparkle 2.x (Beta)
 
-A major fork to the popular Sparkle update framework that supports sandboxing, custom user interfaces, updating other bundles, and a modern secure architecture.
+Secure and reliable software update framework for Cocoa developers.
 
 <img src="Resources/Screenshot.png" width="732" alt="Sparkle shows familiar update window with release notes">
 
-This fork's current status is beta. I am no longer looking into adding or rewriting major functionality, and would like to finalize and have it be battle tested.
+This is the upcoming new version of Sparkle, based on the `ui-separation-and-xpc` branch.
+Major new features are support for sandboxing, custom user interfaces, updating other bundles, and a modern secure architecture.
+
+Sparkle 2.x is currently in beta. Some people already use it in production, but some work is still required before it can be released:
+
+1. Documentation for the website needs to be written (see [https://github.com/sparkle-project/sparkle-project.github.io](sparkle-project.github.io))
+2. Changes from the master branch need to be merged
+3. Bugs and issues have to be fixed
+
+If you can help with any of the above, please submit pull requests!
 
 New issues that are found should be [reported here](https://github.com/sparkle-project/Sparkle/issues). Internal design documents can be found in [Documentation](Documentation/). Discussion of this fork can be found in [this issue](https://github.com/sparkle-project/Sparkle/issues/363).