Clarify xpointer() extension removal

Author: nwellnhof

NEWS

@@ -57,8 +57,12 @@ to be enabled by passing --with-zlib, --with-lzma or --with-http to
 configure. In legacy mode (--with-legacy) these options are enabled
 by default as before.
 
-Support for FTP and xpointer() XPath extensions will be removed in
-the next release.
+Support for FTP will be removed in the next release.
+
+Support for the range and point extensions of the xpointer() scheme
+will be removed in the next release. The rest of the XPointer
+implementation won't be affected. The xpointer() scheme will behave
+like the xpath1() scheme.
 
 Several more legacy symbols were deprecated. Users of the old "SAX1"
 API functions are encouraged to upgrade to the new "SAX2" API,