When you go to a person's profile, you can see a list of Recent Emails in the sidebar. When you click these, you can see more details about those emails. We've given these detail popups a great new design and made it faster to see the content of group emails.
Previously, when you clicked to view a message sent to a group, you would have a second step where you would get a list of people and then choose which person from the group you wanted to see.
In this new design, that second step has been eliminated and it now takes you directly into viewing the content of the email. You get a dropdown box at the top to see the specific email sent to each person in the group, but since the content is generally the same, you'll rarely even need to change it.