Upcoming firefox release to be 1.5

Asa Dotzler: "For the last several months, we've been discussing the versioning of the upcoming Firefox release. One major consideration in this decision was that the sheer volume of changes in the Firefox core (Gecko) made a minor .1 increment seem misleading. While it may not be obvious by looking simply at release dates, today's Gecko core of Firefox has seen nearly 16 months worth of changes compared to what shipped in Firefox 1.0. This is because we created our Gecko 1.7 branch (the branch from which Firefox 1.0 shipped) back in April of 2004. At that time, Gecko development on the trunk continued and very little of that work was carried over to the 1.7 branch to be included in Firefox 1.0. Another consideration was that we've made some major improvements to the Firefox application, especially in the update and extension systems that warrant more than a minor version bump. Calling it 1.1 would suggest to most users that this was a minor update when in fact it is quite major and all 1.0 users really should move forward for a much improved product..." More | MozillaZine