diff --git a/README.md b/README.md
index 631450e..83a65df 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ This is the designated successor of the `vibe-d:core` sub package of [vibe.d 0.7
 
 Another major design change is that instead of the previous driver model, there is now a separate, lower-level event loop abstraction ([eventcore](https://github.com/vibe-d/eventcore.git)) which follows a callback based Proactor pattern. The logic to schedule fibers based on events has been pulled out of this abstraction and is now maintained as a single function, leaving to a huge improvment in terms of robustness (most issues in the previous implementation have probably never surfaced in practice, but there turned out to be lots of hidden bugs).
 
-The development state is still heavy work-in-progress.
+The implementation is mostly finished, except for final production testing and a final review of the stream API. Also, eventcore is still missing WinAPI and kqueue implementations.
 
 [![Build Status](https://travis-ci.org/vibe-d/vibe-core.svg?branch=master)](https://travis-ci.org/vibe-d/vibe-core)