In Hibernate 4 I've found (new for me) possibility to use XSD schema instead of DTD.
<hibernate-mapping xmlns="http://www.hibernate.org/xsd/hibernate-mapping"
xsi:schemaLocation="http://www.hibernate.org/xsd/hibernate-mapping hibernate-mapping-4.0.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
But the schema location is invalid and during initialization I've got error.
Does anybody knows what is wrong with XSD in Hibernate 4?