README: updating with new status from 'The Unbooks' ebook being published, closes #1899

Author: getify

README.md

@@ -3,7 +3,8 @@
 This is a series of books diving deep into the core mechanisms of the JavaScript language. This is the **second edition** of the book series:
 
 <a href="https://leanpub.com/ydkjsy-get-started"><img src="get-started/images/cover.png" width="75"></a>&nbsp;&nbsp;
-<a href="https://leanpub.com/ydkjsy-scope-closures"><img src="scope-closures/images/cover.png" width="75"></a>&nbsp;&nbsp;...
+<a href="https://leanpub.com/ydkjsy-scope-closures"><img src="scope-closures/images/cover.png" width="75"></a>&nbsp;&nbsp;
+<a href="https://leanpub.com/ydkjsy-unbooks"><img src="unbooks-cover.png" width="75"></a>
 
 **To read more about the motivations and perspective behind this book series, check out the [Preface](preface.md).**
 
@@ -16,9 +17,9 @@ I recommend reading the **second edition** books in this order:
 * [Get Started](get-started/README.md) | [Buy on Leanpub](https://leanpub.com/ydkjsy-get-started) | [Buy on Amazon](https://www.amazon.com/dp/B084BNMN7T)
 * [Scope & Closures](scope-closures/README.md) | [Buy on Leanpub](https://leanpub.com/ydkjsy-scope-closures) | [Buy on Amazon](https://www.amazon.com/dp/B08634PZ3N)
 * [Objects & Classes](objects-classes/README.md) (draft stable)
-* [Types & Grammar](types-grammar/README.md) (draft in progress)
-* Sync & Async (not yet started)
-* ES.Next & Beyond (not yet started)
+* [Types & Grammar](types-grammar/README.md) (rough draft)
+* ~~Sync & Async (canceled)~~
+* ~~ES.Next & Beyond (canceled)~~
 
 If you're looking for the previous **first edition** books, [they can be found here](https://github.com/getify/You-Dont-Know-JS/blob/1st-ed/README.md).
 
@@ -60,6 +61,6 @@ I want to extend a warm and deep thanks to Marc Grabanski and the entire Fronten
 
 ## License & Copyright
 
-The materials herein are all &copy; 2019-2022 Kyle Simpson.
+The materials herein are all &copy; 2019-2025 Kyle Simpson.
 
-<a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-nc-nd/4.0/88x31.png" /></a><br />This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/4.0/">Creative Commons Attribution-NonCommercial-NoDerivs 4.0 Unported License</a>.
+<a rel="license" href="https://creativecommons.org/licenses/by-nc-nd/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-nc-nd/4.0/88x31.png" /></a><br />This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/4.0/">Creative Commons Attribution-NonCommercial-NoDerivs 4.0 Unported License</a>.