Update README.md

README.md

@@ -6,8 +6,12 @@ and by ISO as an International Standard ISO/IEC 15948:2003 (E)
 with identical contents.
 
 This repository is being used to work on an [Editors Draft](https://w3c.github.io/PNG-spec/),
-and also for discussion and update of any technical changes or additions.
+and also for discussion and update of technical changes or additions.
 A First Public Working Draft of the [Third Edition of PNG](https://www.w3.org/TR/2022/WD-png-3-20221025/) 
-was published in October 2022. ([Changes from Second Edition](https://www.w3.org/TR/png-3/#changes-since-the-w3c-recommendation-of-10-november-2003-png-second-edition)). There is an [Explainer](https://github.com/w3c/PNG-spec/blob/main/Third_Edition_Explainer.md) for features new in the Third Edition.
+was published in October 2022. ([Changes from Second Edition](https://www.w3.org/TR/png-3/#changes-since-the-w3c-recommendation-of-10-november-2003-png-second-edition))
+and [updated](https://www.w3.org/TR/2023/WD-png-3-20230720/) on 20 July 2023
+([changes since FPWD](https://www.w3.org/TR/2023/WD-png-3-20230720/#changes-20221025). 
+
+There is an [Explainer](https://github.com/w3c/PNG-spec/blob/main/Third_Edition_Explainer.md) for features new in the Third Edition.
 
 The [PNG Extensions specification](https://w3c.github.io/PNG-spec/extensions/Overview.html) is also here.