Google now includes Google+ profile information within contacts lists, both in Gmail and in the standalone Google Contacts manager. In addition to Google+ information about your contacts any Google+ circles you’ve set up will now be available inside the contacts manager.
If you’d like to see the new features in action, head over to the Google Contacts page (or click the contacts link in your Gmail account). Note that so far the integrated Google+ contacts don’t appear to be available for Google Apps users.
The move is part of Google’s slow, but steady progress toward its goal of adding Google+ features to all its myriad services.