I’m not sure. There’s still a profile button (to the left of your username) at the top of the right column. If you don’t have an avatar set up (please do!!) then it would default to the first letter of your username (unless you have a Gravitar profile set up, then it uses that.)
Clicking on it still takes you to your profile.
The messages and updates pane personalised to you has been gone a LONG time bacause it stopped working.