That UI looks very similar to current Firefox editions on other platforms, including Windows 8 and OS X, and will, like Edge, offer 'light' and 'dark' themes to match the operating system's options.

'Major design and product updates are targeting Firefox 40, to be released on August 11,' another Mozilla planning document stated.Įarlier this month, Mozilla published design specifications for Firefox UI (user interface) on Windows 10. Not only did Mozilla release a beta of that version more than two weeks ago with support for Windows 10 on the desktop and on tablets, but other documents have hinted that 40 will be it. The more likely candidate seems to be Firefox 40. 11 - or Firefox 41, which now has a Sept. According to publicly posted information, Mozilla is shooting to support Windows 10 with either Firefox 40 - slated to ship Aug. 'Our goal is that when Windows 10 releases start to go out, Firefox will work well on Windows 10.'īut Mozilla will not make it in time to launch Firefox simultaneously with Windows 10, although it could come close. 'We don't know exactly what the update trajectory will look like,' Mozilla said in one document. Others, including those running Windows 7 or 8.1 who have 'reserved' a copy of the free upgrade, will be able to migrate to Windows 10 later, as Microsoft will notify users in waves on a not-yet-specified timetable. Microsoft will launch Windows 10 in just over a week, with preview testers getting the final build on July 29.

Firefox focus for windows