Recently Mozilla released the next generation web – browser – Firefox 4. This version is equipped with awesome features. However, there is much more for Firefox fans. Mozilla plans to release a new major version of Firefox at every six to sixteen week intervals, which scheduled final release of Firefox currently sets on June 21, 2011 and Firefox 6 on August 18, 2011.

Mozilla Firefox will be entering a rapid development cycle with quick release of successive builds, with both early builds of both Firefox 5 and Firefox 6 versions been released for consumption.

According to Mozilla blog

The Aurora channel is where users can test the latest features and innovations. Users can expect an increase in polish from the raw, cutting edge features in our nightly builds.

The Firefox web browser from both the nightly builds and Aurora channels spot a different new logo than those on beta or final release.

As part of the rapid development cycle, Mozilla is creating another release channel named Aurora in order to allow early adopters a chance to test and experience latest features and innovations at various levels of quality and polish. This channel is in addition to existing nightly test builds called Minefield, beta and final release channel.

Download Firefox 5 from Aurora Channel and Firefox 6 from Nightly Builds

The introduction of Aurora channel will bridge the gap between the release of official beta version of next version of Firefox.

Download Mozilla Firefox 5 (Aurora):

• http://www.mozilla.com/firefox/channel/ (only Windows builds are listed)
• Mozilla FTP server (for Windows, Mac OS X and Linux builds)

Mozilla Firefox 6 is currently the only version which has an official 64-bit (x64) version available for Windows platform. If you install the nightly built Firefox 6, you may want to upgrade to new build everyday.

Download Mozilla Firefox 6 (Nightly Builds):

• http://nightly.mozilla.org/ or
• Moziila FTP Server