"Google Apps customer relationship management tool is finalized and available to the public."

The tool works with the Google Personalized Homepage or Google Apps for your Domain. The tool is provided by a third party, Etelos. To me it looks like new modules for the personalized homepage that you would use in a business environment.

Article:
http://www.pcworld.com/article/id,130822-c,google/article.html

Etelos CRM for Google site:
http://www.eteloscrm.com/article.espx?show=12341

I also briefly played around with this:
http://blogoscoped.com/archive/2007-03-28-n14.html