Mark Harrison remind us on the updates in the Office System Preview site:
The Office Systems Preview site has been updated with lots more info on the servers, including: overviews, top reasons to upgrade, product guides, system requirements and FAQs …
- Office Forms Server 2007
- Office Groove Server 2007
- Office Project Server 2007
- Office SharePoint Server 2007 … also Windows SharePoint Services
You can find this article here.