OS X Yosemite is already available on the Mac App Store, but for those who do not intend (at least for now) to upgrade to the new system, Apple tried to release the iTunes 12.0.1.
The twelfth version of iTunes brings a new look, adapted to Yosemite, even for those still on OS X Mavericks and it is also available for Windows PCs.
In addition to iTunes 12.0.1, Apple also made available Security Update 2014-005 1.0 (7.2MB) for Mavericks users. The update can be downloaded either from the Mac App Store or from this Apple support page.
Another update that also painted today was the Windows Migration Wizard 188.8.131.52 (5.2MB), which helps to migrate data from a PC running Windows XP, Windows Vista, Windows 7 or Windows 8 it automatically starts after installation.