An anonymous reader writes "As expected, Mozilla on Tuesday officially launched Firefox 17 for Windows, Mac, and Linux. The biggest addition in this release is click-to-play plugins, announced back in October. In short, the addition means Mozilla will now prompt Firefox users on Windows with old versions of Adobe Reader, Adobe Flash, and Microsoft Silverlight (more will be added eventually)." The release notes are available, as is a list of changes for devs. Firefox for Android got a new release as well (notes).