add section Draft Implementation
diff --git a/Go2ErrorValuesFeedback.md b/Go2ErrorValuesFeedback.md
index 09dc961..6d21d86 100644
--- a/Go2ErrorValuesFeedback.md
+++ b/Go2ErrorValuesFeedback.md
@@ -10,6 +10,12 @@
- Ben Johnson, "[Failure is Your Domain](https://middlemost.com/failure-is-your-domain/)", June 2018
+### Draft Implementation
+
+- Go Team, “[x/exp/errors](https://godoc.org/golang.org/x/exp/errors)”, November 2018
+
+- Torben Schinke, “[Implementation of the draft design](https://github.com/worldiety/errors)”, December 2018
+
### Error Inspection
- Ilya Sinelnikov, "[`Is` and `As` differ in behavior which is unexpected](https://github.com/sidh/go2errorsinspection)", December 2018
