As we get closer to the date of Apple's annual Worldwide Developers Conference, work on next-generation operating systems iOS 10 and OS X 10.12 is unsurprisingly ramping up based on data gathered from our site logs.

MacRumors first started seeing visits from a small number of devices running iOS 10 and OS X 10.12 in late 2015. Visits picked up starting in January, and have grown steadily throughout the month of February.





Visitors to MacRumors.com from devices running iOS 10

We're now seeing hundreds of visits per day from devices that have iOS 10 or OS X 10.12 installed, and we will undoubtedly see those numbers continue to climb as the months tick by.





Visitors to MacRumors.com from devices running OS X 10.12

It's still early in the development process so we haven't heard much about the new features we can expect to see in iOS 10 and OS X 10.12, but there have been a few tidbits. One of the main focal points in OS X 10.12 is said to be Siri for Mac , finally bringing Apple's voice assistant to OS X.

Both iOS 10 and OS X 10.12 may also include improvements to the Photos app, introducing some capabilities that were removed in the transition from iPhoto to Photos. Additional details about the two new operating systems will leak out as we approach the middle of the year.

While iOS 10 and OS X 10.12 are unlikely to be released to the public until the fall, Apple traditionally debuts new operating system updates at WWDC, giving developers time to get acquainted with new features and build new capabilities into their apps.

This year's Worldwide Developers Conference is expected to take place from June 13 to June 17, based on the booking schedule for Moscone West in San Francisco, where Apple has held the event for many years in a row.

MacRumors is also seeing a small number of visits from devices running iOS 9.3.1, suggesting there will be additional updates to iOS 9 ahead of the debut of iOS 10.