The first small change is your avatar now appears on the top right next to 'Welcome *******'. Thought it looked nice.
The second change is a helpful one. There is now a @ button in the posting box which, when clicked, allows you to easily type in the name of a person to @ and select from your list of friends to save the trouble of typing "s and spelling everything perfectly.
Keep an eye out for more changes soon, and if these ones cause any problems let me know!