Elaborate on engine change

Change-Id: I962f292878e4a1c8a8502f36e59803956230b90d
Reviewed-by: Martin Jones <martin.jones@nokia.com>

diff --git a/doc/src/declarative/whatsnew.qdoc b/doc/src/declarative/whatsnew.qdoc
index f9e1e77..49ef474 100644 (file)
--- a/doc/src/declarative/whatsnew.qdoc
+++ b/doc/src/declarative/whatsnew.qdoc
@@ -48,7 +48,7 @@ classes replace their equivalents in QtQuick 1:
 
 \section2 QML Engine/Language Improvements
 
-JS engine changed to V8.
+JS engine changed to V8. For most QML users this should not make a visible difference beyond performance improvements, however a lot of undefined behavior semantics may have changed as well. As always, it is recommended not to rely on undefined behavior.
 
 Parser and compiler optimizations.