The "pre" version numbers are used for nightlies and are not always kept up to date. For example, current nightlies are still labeled "3.7a6pre" even though Fi

The "pre" version numbers are used for nightlies and are not always kept up to date. For example, current nightlies are still labeled "3.7a6pre" even though Firefox 3.7 was renamed Firefox 4 weeks ago, and the next release will probably be Firefox 4.0b1.