Hi! Just a heads up that folks from the dev tools team will be monitoring this thread and are on-hand to answer questions. We'll try not to thread sit too much. :) In brief, the Developer Edition is a new release channel for Firefox, replacing Aurora (our pre-Beta channel). Everything else about the release cadence is the same.

There are four major new features here:

1. The Firefox Tools Adapter ("Valence"), which lets you use the Firefox dev tools to inspect and debug pages in Chrome for Android and Safari for iOS. The goal: one set of tools to debug any browser.

2. Side-by-side profiles. The Developer Edition defaults to a profile named `dev-edition-default`, which makes it easier to run Developer Edition at the same time as a normal release version of Firefox. You don't have to deal with the profile switcher each time.

3. Developer-friendly defaults. Developer Edition ships with things like remote debugging and browser-chrome debugging enabled by default.

4. And, for all of you who hated Australis, a compact theme with square tabs.

But those are just consequences of the single biggest change:

5. We have a new channel, which new rules. And we want to use it to build the best possible browser for web developers. We can ship new tools that aren't yet ready for the Beta channel, and we can change the browser's appearance and defaults specifically for web developers.

We'll be watching this thread during launch, but you can always submit feature requests on UserVoice. The right people will see them: https://ffdevtools.uservoice.com/forums/246087-firefox-devel...

This isn't a finished product. It's an invitation.

What tools do you need?