diff --git a/README.md b/README.md
index 21e716db32..2c0696456a 100644
--- a/README.md
+++ b/README.md
@@ -49,11 +49,11 @@ Current development overview:
 
 - ~~**April 2019**: Inital single-client testnets.~~
 - ~~**September 2019**: Inter-operability with other Ethereum 2.0 clients.~~
-- **Q4 2019**: `lighthouse-0.0.1` release: All major phase 0
+- ~~ **Q1 2020**: `lighthouse-0.0.1` release: All major phase 0~~
      features implemented.
-- **Q4 2019**: Public, multi-client testnet with user-facing functionality.
-- **Q4 2019**: Third-party security review.
-- **Q1 2020**: Production Beacon Chain testnet (tentative).
+- **Q1 2020**: Public, multi-client testnet with user-facing functionality.
+- **Q2 2020**: Third-party security review.
+- **Q3 2020**: Production Beacon Chain testnet (tentative).
 
 
 ## Documentation