Just noticed another new feature, I wondered what this little icon was, see image.
I first checked the location and its name (modify_inline.gif) made me curious and it is an in-line modify for your post, instead of the old modify effectively taking you out of the topic for the post modification. Click the icon to modify your post and it remains in-line and opens the post there in the posts position in the topic. I think this will be very useful.