In the Test Library, I can display all tests linked to a release or not linked to a release by using a filter. This is not intuitive to many of our testers. To be consistent with the other entities in the system, it would be helpful to have a Releases tab in the navigation pane on the left before the Folders tab as is the case for Test Sets.
Here you can review submitted feature requests and vote up the ones you like! If you can't find the feature you want - go ahead and suggest your own idea. Ideas with the highest rating can be implemented in the product.