We launched a new look for Google Groups in May last year. This design offers a new and improved user interface in addition to some popular features like:

- Collaborative inbox
- Rich text formatting of messages in the Groups interface
- Ability to move posts to a different discussion, mark it as a duplicate or assign it to someone
- Customizable roles and permissions for people

We will retire the old interface soon after June 10th. After this day, people will automatically be transitioned over to the new UI and will not have the option to go back to the old one.

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

For more information:
http://support.google.com/a/bin/answer.py?answer=126169

whatsnew.googleapps.com
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