By Michael Oleaga / m.oleaga@latinospost.com (staff@latinospost.com) | First Posted: Jul 30, 2013 06:19 PM EDT

Apple has finally seeded the fourth preview of its upcoming mobile operating system.

Known as "iOS 7 beta 4," the seed contains bug fixes and improvements from beta 3, which launched three weeks ago.

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iOS 7 beta 4, which has identification build 11A4435d, has reportedly come with a reference to the long-rumored fingerprint sensor. As 9to5Mac reported, a folder with the name "BiometricKitUI" was spotted, and a tweet by Hazma Sood alluded that the file is part of the fingerprint sensor.

"Sood tells us that the above strings are what an iPhone with VoiceOver on would read to a user," wrote Mark Gurman of 9to5Mac. "According to a source familiar with the development of the new iPhone, the user-interface for the fingerprint scanning system has been complete. This person also says that the technology is focused around unlocking the phone, so it is unclear if it is built for a payment system (as rumored) in the next iPhone."

The launch of iOS 7 beta 4 did break the two-week interval of iOS 7 beta releases since June 10. The delay in seeding iOS 7 beta has been rumored to be part of an alleged hacking that resulted in Apple's developers page temporarily shutting down. The developers' page has since resumed some of its services.

By visiting Apple's Developer webpage, people can download iOS 7 beta, as long as they have an iOS developer account, which cost $99 per year.

Related iOS 7 Articles:

- iOS 7 Features: Apple's Mobile Operating System Debuts at WWDC 2013 with 'Flat' Surface [Video]

- iOS 7 Beta Features Leak: Bug Found, Allows Lockscreen Bypass to Photos Via Control Room [Video]