When you click on a member name to see their user profile, you will now see a link to comments about their photos.
The lensbrowser has been updated and is now linked from other pages within the site. For example, if you click on a link for a lens to see the gallery for that lens, you will see the film strip icon as well. That will show you the lens browser with some cosmetic enhancements.
When you are looking at a collection, if you click on the collection name at the top of the page, a pop up window will appear with the url to the collection. This is good to copy the web address and share with others.
That's it for now. I can't remember what else I did but I know I did something else.