Mozilla has updated both
Firefox beta and Firefox Aurora with new features today, with small but notable security changes landing in the former and preliminary native PDF support hitting the latter.
The developer's build of the browser,
Firefox 15 Aurora (download for Windows, for
Mac, and for
Linux,) now comes with preliminary native support for PDFs. This is a feature that arrived some time ago in Google Chrome, and helped that browser respond to large document handling faster than the competition.
This version of Firefox also supports the next version of
SPDY, better developer tools, improved HTML5 support, and fixes to address add-on related memory leaks. The full list of
changes in Firefox 15 Aurora can be read here.