The source code of the Google Profiles page includes a broken link that has a enlightening anchor text: "business profiles". The link sends you to a page that doesn't exist: http://www.google.com/_/managepages, but this characteristic could add Google Profiles to Google Apps and allow users to create multiple profile pages.
Another interesting thing is that Google has a new subdomain: https://plusone.google.com, which redirects to Google Profiles. There's already a Web page about the +1 button, so it's not clear why Google has a new address for Google +1. Maybe profiles will be a characteristic of Google +1.