I have another Google Apps update for you. Next Tuesday (8/30), we'll have page-level permissions for Google Sites. That means that we can create hierarchies of pages within a site while micro-managing who has access to which page. I'm currently on a group that's considering the future of the UL Wiki, so I find this new feature particularly interesting.
The other change on Tuesday will be the option to attach a vcard in Gmail. There seems to be a steady stream of silent updates to Google Apps, and I've only been selecting the few most relevant ones. If you're curious about them, there is a calendar you can follow (let me know if you're interested.)