There were two changes to design and functionality that were released today (March 14th, 2013) that I wanted to specifically mention on Site Talk:
1) Improved experience with posting and replying on IOS devices, thanks to wider fields and more precise zooming.
2) For logged-in users: The arrow that indicated when a discussion had been “updated” has been changed to a blue dot that appears to the left of a discussion title. Completely read discussions are still grayed out, while brand-new discussions will appear as normal, without any blue dot.
If anyone has any questions about these changes, feel free to ask them here.