diff --git a/epub32/spec/epub-changes.html b/epub32/spec/epub-changes.html
index da4accda9..dcf8678d0 100755
--- a/epub32/spec/epub-changes.html
+++ b/epub32/spec/epub-changes.html
@@ -78,9 +78,16 @@ <h1>Introduction</h1>
 		<section id="overview">
 			<h1>Overview</h1>
 
-			<p>Since all valid EPUB 3.0.1 files will also be valid EPUB 3.2 files, creators of EPUB 3 publications today
-				should not need to change anything. EPUB 3.2 does provide a few more options, and formally recommends
-				that content creators follow the EPUB Accessibility Guidelines. </p>
+			<p>Most existing EPUB 3.0.1 files should validate as EPUB 3.2 with no changes, 
+			and so content authors should not need to change their workflows and processes. 
+			EPUB 3.2 does provide a few more options, and formally recommends 
+			that content creators follow the EPUB Accessibility Guidelines.</p>
+
+			<div class="note">
+				<p>Changes to the underlying web standards of HTML, CSS, and SVG 
+			can affect validity, as well as changes to <a href="https://github.com/w3c/epubcheck">EPUBCheck</a>.</p>
+			</div>
+
 
 			<p>The biggest change in EPUB 3.2 is the relationship to the core web specs of HTML, CSS, and SVG. In the
 				past EPUB has pointed to a particular dated version of HTML or CSS. EPUB 3.2 now officially supports the