The Firefox 40 final is stable and ready for download now with performance improvements, standards support (HTML5 and CSS3 are constantly being added to, for instance) and bug fixes. You can find the changes in Firefox 40 and compare with the Firefox 39 FINAL.

Here are new features and improvements of Firefox 40:

• Support for Windows 10
• Added protection against unwanted software downloads
• Suggested Tiles show sites of interest, based on categories from your recent browsing history
• Hello allows adding a link to conversations to provide context on what the conversation will be about
• New style for add-on manager based on the in-content preferences style
• Improved scrolling, graphics, and video playback performance with off main thread compositing (GNU/Linux only)
• Graphic blocklist mechanism improved: Firefox version ranges can be specified, limiting the number of devices blocked

Download the Firefox 40 FINAL