While iTunes has been available for Windows 8 in desktop mode for some time now, there still is no app for the Metro UI and things look like they will stay that way for a while into the future. Microsoft says it has rolled out the red carpet, but Apple has yet to walk down it.
"You shouldn't expect an iTunes app on Windows 8 any time soon," said Tami Reller, chief financial officer of Microsoft's Windows division. "ITunes is in high demand. The welcome mat has been laid out. It's not for lack of trying." This presents a major problem for Microsoft Surface RT users who cannot install or run any non-Microsoft desktop software.
Apple really has no incentive to build a Windows 8 iTunes app, as this would give users yet another reason to ditch their iPad's and switch to other non-Apple hardware. Apple is fine with coding desktop apps, but their Mac line is still a very niche market when you look at the big picture, while on the other hand, their iPad is the bestselling tablet by leaps and bounds.