The latest design revive of the Google Docs homepage extra many useful features, but also made some contentious changes. Google decided to hide helpful information like the last modified date and the list of collaborators from the list view because it was obtainable in the sidebar.
If you missed the old boundary, you can now switch to the particulars view and see some additional in sequence next to the filename.
There's also a little icon that lets you for the moment hide the sidebar. For some reason, Google Docs doesn't enduringly hide the sidebar when you click on the arrows.