Apple's first submission into the wearable device market is expected to hit shelves this fall and come in multiple different versions.

Unnamed sources told the Wall Street Journal Apple is going to release the iWatch in different forms to attract the most possible customers. It is also expected to be released in the fall, which is the time of year traditionally reserved for the iPhone's release.

The main focus of the iWatch will be tracking and storing health information. The sources said the smartwatch will have 10 sensors to stand out from similar devices that critics say are no more than a small smartphone on one's wrist.

With the announcement of iOS 8 at the Worldwide Developers Conference, Apple introduced Healthkit, an app that will store and track health and fitness data. One handy use of Healthkit will be for visits to the doctor, as the app will conveniently store necessary information.

The iWatch should be able to read and store blood pressure, heart rate and other health- and fitness-related information. Apple has been hinting at a brand new product line and CEO Time Cook has yet to make his mark with an innovation that is truly his own. It has been four years since Steve Jobs introduced the iPad, so Apple is due for a new product.

One of the unnamed sources told the Journal the iWatch will likely come in different screen sizes and another source said final specifications are still being sorted out. The devices are expected to start shipping within a few months, placing a tentative release date in October.

The Journal reported Quanta Computer Inc., a Taiwanese manufacturer Apple has used before, will produce about 10 to 15 million units later this year. True to form, Apple is apparently tinkering with the device's specifications right up until production is set to begin.

"I expect Apple to launch multiple smartwatches that come with different designs as watches are fashion accessories," KGI Securities analyst Ming-chi Kuo told the Journal. "One design doesn't fill all."