Mozilla is scheduled Firefox 19 for release by tomorrow. But for those who wish can download the Firefox 19 right now from Mozilla FTP servers. You can get the Firefox 19 final download link right now. Just follow the link given below to download the newer version of Firefox.
Firefox is getting more beautiful with every new version. Also Firefox has recently introduced a Windows 8 Nightly Build. If you have missed this you can get it below.
Download Metro Firefox [Nightly Build] – May contain bugs.
Now to the new Firefox 19. As already mentioned built-in PDF viewer is the attraction of New Firefox 19. There are also some changes meant for developers. Wait for the final release to get the complete change log officially. You can follow Firefox Blog, if you wish to download Firefox officially after release.
We will provide you the update once the final version of Firefox 19 is officially rolled out.