With OS X 10.12, Apple will finally add Siri integration across its line of computers.

Sources at 9to5Mac say Apple has been testing Siri on OS X internally since "at least 2012," but the company has only just developed a "clear vision" for integration on its OS X devices.

And according to sources, Apple will introduce OS X 10.12 at its World Developers Conference in June. Siri functionality will be available through Mac's menu bar, similar in location to the Spotlight magnifying class or notifications icon. Pressing the Siri icon on the menu bar will enable its voice control feature.

Users will have the option to create keyboard shortcuts to "activate the service," and will also be able to "enable Siri at the first startup of OS X 10.12." If the user's computer is plugged in, 9To5Mac says, a "Hey, Siri" command will enable its functionality.

9To5Mac also notes OS X 10.12, code-named Fuji, will also include "minor user-interface tweaks across core system application windows," but nothing like Apple's 2014 OS X update.

Apple's iOS 10.12 will reportedly launch in the fall.

The company recently announced its new iPhone trade-in system, giving customers incentive to turn in their old phones for a new upgrade. The company will also take Android and Windows phones.