I spotted the following thread on the AS2005 beta newsgroup, concerning the new way of creating local cubes in AS2005:
(Apologies for the link, but the web-based UI didn’t give me a better way of linking to the whole thread – hopefully you can read it backwards)
Anyway, in summary, it means you create local cubes with the same DDL as you use to create server-based cubes – a very welcome improvement in my opinion.