This week we will release another update, but not on Tuesday as we typically do. This Tuesday is Microsofts scheduled monthly update to Windows, and those updates have interacted badly with our updates before. Were also waiting for a report from ZDI about a security vulnerability that may affect this new version of Firefox. We expect to receive the report by end of day Monday. We’ll update our post here once the latest version is available to the world. In the meantime, check out one of our early release channels.”]
Source: https://blog.mozilla.org/futurereleases/2012/03/12/update-on-firefox-release-timing/