README: Disque is now beta, no longer alpha. API is stable.

README.md

@@ -11,9 +11,10 @@ simple to understand properties and guarantees, but still resembling Redis
 in terms of simplicity, performances, and implementation as a C non-blocking
 networked server.
 
-Currently (27 April 2015) the project is just an alpha quality preview, that was developed in roughly 120 hours, 244 different commits performed in 72 different days, often at night and during weekends. In short: don't expect much or rock solid production systems here.
+Currently (2 Jan 2015) the project is in release candidate state. People are
+encouraged to start evaluating it and report bugs and experiences.
 
-**WARNING: This is alpha code NOT suitable for production. The implementation and API will likely change in significant ways during the next months. The code and algorithms are not tested enough. A lot more work is needed.**
+**WARNING: This is beta code and may not be suitable for production usage. The API is considered to be stable if not for details that may change in the next release candidates, however it's new code, so handle with care!**
 
 What is a message queue?
 ---