Health Unlocked has just implemented a new layout in the navigation bar on top of the page.
Messages and notifications have switched places and there are some other changes as well, for example the Help button disappeared from the main menu (but you can access it from under your username/avatar).
HU encourages people to give them feedback in the announcement they just made, which reads as follows:
"We have made some improvements to the bar at the top of your screen, which links to other areas of the site and takes you from one page of the website to another section.
It is now simpler and clearer than ever before.
By clicking on the newly updated 'my hub' tab at the top of the page, you will find a list of communities, can easily click to browse other communities, and see other tools and resources available across the site.
Like it, or hate it, or have suggestions on how to make it even better? If so, we want to know, please email firstname.lastname@example.org with any feedback"