The new Reporting screen, which is currently in beta, will eventually replace the legacy Reporting screen and will include a host of new and improved reports. The features and reports in this new screen will be rolled out in stages, across 6 consecutive releases.
The My reports section, in the Reporting screen, contains a list of custom reports that you have generated.
From here you can:
Edit the details of an existing report, such as adding or removing filters, changing scheduling or altering share settings
Search for particular report using the search bar
Filter the list of reports by selecting a filter from the dropdown