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NEW
When opening a new tab, users are now presented with their most visited pages
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NEW
The default home page now has quicker access to bookmarks, history, settings, and more
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CHANGED
SPDY protocol now enabled by default for faster browsing on supported sites
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CHANGED
Restored background tabs are not loaded by default for faster startup
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CHANGED
Smooth scrolling is now enabled by default
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DEVELOPER
72 total improvements to Page Inspector, HTML panel, Style Inspector, Scratchpad and Style Editor
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DEVELOPER
The column-fill CSS property has been implemented
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DEVELOPER
Experimental support for ECMAScript 6 Map and Set objects has been implemented
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DEVELOPER
Support for the CSS3 background-position property extended syntax has been added
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DEVELOPER
The :invalid pseudo-class can now be applied to the
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DEVELOPER
The CSS turn <angle> unit is now supported
What’s New
Known Issues
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Unresolved
If you try to start Firefox using a locked profile, it will crash (see 573369)
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Unresolved
For some users, scrolling in the main GMail window will be slower than usual (see 579260)
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Unresolved
Windows: The use of Microsoft's System Restore functionality shortly after updating Firefox may prevent future updates (see 730285)
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Unresolved
OS X: nsCocoaWindow::ConstrainPosition uses wrong screen in multi-display setup (see 752149)
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Unresolved
CSS :hover regression when an element's class name is set by Javascript (see 758885)