Spring Framework XSD entries no longer in XML catalog

In previous versions (e.g. 2.5.0 and 2.5.2) the XML catalog plugin entries contained xsd entries for all of the various spring framework jars. 2.6.1.SR1 does not contain these entries. Is there a reason for this? I suppose this is not a problem for people developing on a computer or LAN that is connected to the internet, but for those of us who are disconnected from the internet while developing, this is an issue. My workaround is to add an entry when I need it, but I'd rather have the plugin entries. Can anyone advise me why this has changed in the latest release, or if there is a way to get the plugin entries into the catalog?