March 14 will be one of the most important days in the smartphone industry, when Samsung is expected to launch the Galaxy S4. Until now rumors indicated that the Galaxy S4 will use the same processor globally, but a new report indicates there will be an international version and a separate U.S.-only variant of the handset.

A recent Bloomberg report indicates that the U.S. version of Galaxy S4 will have a Qualcomm quad-core processor, whereas other markets will get the Galaxy S4 with an octa-core processor.

"The U.S. version will use Qualcomm Inc.'s quad-core chip, giving the phone more processing power to handle multiple tasks at the same time, they said. In other markets, it will rely on Samsung's 'octacore' eight-core chip," reports Bloomberg.

Previously, the Galaxy S3 was also launched with a Qualcomm Snapdragon S4 Plus processor meant exclusively for the U.S. market and a Samsung Exynos 4 processor for the international variant. It should not come as surprise if Samsung announces a U.S.-only version and an international version of the Galaxy S4 as well.

The Bloomberg report also says that the highly touted eye-scroll feature, which would track eye movements to let users scroll through articles based on where they're looking on the screen, may not be present out of the box.

"People familiar with the device disputed that idea this week, saying that eye scrolling won't be in the Galaxy S4, though it may appear in future versions of the phone. There will be more simplified uses of eye-tracking technology, such as the ability to pause videos when the user's eyes move away from the screen," reports Bloomberg.

The Galaxy S4 is one of the most-anticipated smartphones of this year and just a day remains before Samsung takes the wraps off the smartphone.