An anonymous reader writes: Google is testing out some big changes for Gmail. Some of the changes are: the sidebar has been replaced with a slide-in pane, the "compose" button has been moved, and there's a new feature called "reminders". From the article: 'Gmail may soon look nothing like the Gmail we all know so well. Google has invited a select group of users to test a completely new interface for the webmail client, according to Geek.com, which appears to be part of the trial. The test version of Gmail — which may never see an official release — dispenses with design elements that have been present from the very early days of the email service.'