diff --git a/README.md b/README.md
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@@ -2,5 +2,10 @@
 
 This repository is the official source of the specification and formats in MISP. All the format can be freely reused.
 
-* [misp-core-format](misp-core-format/raw.md.txt) [markdown source](misp-core-format/raw.md) which describes the core JSON format of MISP.
-* [misp-taxonomy-format](misp-taxonomy-format/raw.md.txt) [markdown source](misp-taxonomy-format/raw.md-txt) which describes the taxonomy JSON format of MISP.
+## MISP Format in use and implemented in multiple software
+
+* [misp-core-format](misp-core-format/raw.md.txt) [markdown source](misp-core-format/raw.md) which describes the core JSON format of MISP. Current Internet-Draft: [00](https://tools.ietf.org/html/draft-dulaunoy-misp-core-format)
+* [misp-taxonomy-format](misp-taxonomy-format/raw.md.txt) [markdown source](misp-taxonomy-format/raw.md) which describes the taxonomy JSON format of MISP. Current Internet-Draft: [00](https://tools.ietf.org/html/draft-dulaunoy-misp-taxonomy-format)
+
+## MISP Format in design phase and implemented in one software
+