Add preorder link

Author: akgold

index.qmd

@@ -10,9 +10,9 @@ This is the online version of the book. It is, and always will be,
 freely available here at [$\text{do4ds.com}$](https://do4ds.com). 
 
 Should you want
-a print copy of the book, it is currently under revision with CRC press
-and should be available for purchase in all the usual places by the
-summer of 2024.
+a print copy of the book, it is [available for preorder](https://www.routledge.com/DevOps-for-Data-Science/Gold/p/book/9781032100340). 
+
+Pre-ordered copies will ship in June.
 
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