If I auto generate an entity with seam-gen (1.2.1GA) there is also a detail page generated - something like this:

<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
 xmlns:s="http://jboss.com/products/seam/taglib"
 xmlns:ui="http://java.sun.com/jsf/facelets"
 xmlns:f="http://java.sun.com/jsf/core"
 xmlns:h="http://java.sun.com/jsf/html"
 xmlns:rich="http://richfaces.ajax4jsf.org/rich"
 template="layout/template.xhtml">

<ui:define name="body">

 <h:messages globalOnly="true" styleClass="message"/>

 <h:form id="accountForm">

 <rich:panel>
 <f:facet name="header">account</f:facet>

 <s:decorate id="nameDecoration" template="layout/edit.xhtml">
 <ui:define name="label">Name</ui:define>
 <h:inputText id="name" required="true"
 value="#{accountHome.instance.name}"/>
 </s:decorate>

 <div style="clear:both"/>
 </rich:panel>

 <div class="actionButtons">
 <h:commandButton id="save"
 value="Save"
 action="#{accountHome.persist}"
 rendered="#{!accountHome.managed}"/>
 <h:commandButton id="update"
 value="Save"
 action="#{accountHome.update}"
 rendered="#{accountHome.managed}"/>
 <h:commandButton id="delete"
 value="Delete"
 action="#{accountHome.remove}"
 rendered="#{accountHome.managed}"/>
 <s:button propagation="end"
 id="done"
 value="Done"
 view="/accountList.xhtml"/>
 </div>

 </h:form>

</ui:define>

</ui:composition>

The problem is that the facet header is not renderd. A similar problem in the 1.2.0 release should be solved in this new release.
Look at http://jira.jboss.com/jira/browse/RF-5

Thanks,
Wolfgang