Status Updates: On your name on the top right, there will be a pop-up for updating statuses, similar to Facebook. Hovering over someone's name will show you their profile and status.
Likes: Posts can now be liked.
Tags: Topics can now be tagged, and you can search the tags for similar topics.
Following Options: You can now follow certain threads/posts.
New Themes: Click on the paintbrush icon to the right of your username at the top of the page to check them out! We will be holding a banner contest soon.
New H&E social pages (accessible by clicking on the icons on the right underneath the banner):
Facebook
Twitter
Sharing Options: Posts, topics, and pictures can now be shared on the social media of your choice!
PMs are now Conversations: PMs are now displayed like threads in your messenger, making it easier to keep track of discussions.
Easier Youtube Linking: Simply paste the Youtube URL in your post, and H&E will automatically convert it into a video!
Anti-Ninja Replying: H&E will tell you if any new replies have been posted to a topic WHILE you're writing your own reply. We cannot guarantee that you won't still get ninja'd. 
Gallery Pictures on Index: Now it's easy to see when the Gallery has been updated with new images.
Important: The Library can no longer be accessed, because the software is outdated. All the stories are still in the database, so I will see if it is possible to salvage them by transferring to a new read-only version!