Firefox 64 is available today! Our new browser has a wealth of exciting developer additions both in terms of interface features and web platform features, and we can’t wait to tell you about them. You can find out all the news in the sections below — please check them out, have a play around, and let us know your feedback in the comment section below.
New Firefox interface features
We’re excited to introduce multiple tab selection, which makes it easier to manage windows with many open tabs. Simply hold Control (Windows, Linux) or Command (macOS) and click on tabs to select them.
Once selected, click and drag to move the tabs as a group — either within a given window, or out into a new window.
... read the whole story at hacks.mozilla.org.