Domain admins now have the ability to enforce 2-step verification for users in their domain through the control panel. This can be enforced for all users in the domain or a subset of users in an organizational unit.

Editions included:
Google Apps, Google Apps for Business, Government and Education

Languages included:
US English only (Next Generation release only)

For more information:

http://support.google.com/a/bin/answer.py?hl=en&answer=2548882
http://googleenterprise.blogspot.com/2012/06/posted-by-rishi-dhand-product-manager.html

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