I could not find an offical press release from Microsoft that details the pricing announced at the Worldwide Partner Conference in Houston today. However, according to news sources like Reuters (http://uk.reuters.com/article/technologyNewsMolt/idUKN0745646020080709) there are basically two bundles: $15/month per user for "Information Workers", providing access to a comprehensive suite of products including Exchange and SharePoint and $3/month per user for more limited set of services.
Steve Gaitten
Director of Online Operations
steve.gaitten@bamboosolutions.com
(703)964-2030