Google Profiles will include a new tab for videos, a photo editing feature, you'll be able to group your friends in "circles", chat from Google Profiles and add gadgets. There's also a "camera sync" feature that could automatically upload the photos from the "camera" album of a mobile phone or tablet.
As expected, Google Profiles is the place where Google's social efforts are most visible. Buzz will be a back-end service for activity streams and not a standalone service. Google Profiles could eventually replace iGoogle, since it will add support for gadgets and it will include the most interesting items shared by the people you're following.
{ Thanks, Florian. }