The software update, which made its debut as part of the German and UK iPhone launches last Friday, had previously been available as a direct download for those brave enough to perform manual installations.
Less tech savvy iPhone owners can now acquire and install the update by docking their iPhone to their Mac or PC, selecting the device in iTunes, and then selecting the "Check for Update" option.
Apple does not include a proper set of release notes alongside the software, though previous reports have revealed that the update repairs a TIFF exploit, delivers support for dozens of foreign languages, and includes various localized keyboard layouts.
iPhone Software version 1.1.2 is the fourth widespread iPhone software update, following version 1.1.1, which was released in late September. Versions 1.0.2 and 1.0.1 were released in August and July, respectively.