Apple will introduce new versions of iOS and OS X at its annual developer's conference.
Apple's App Store Reaches 50 Billion Downloads, Now on Pace for 20 Billion Apps Per Year
The milestone is being acknowledged on Apple's website with a graphic showing a "Thanks" message written using award-winning iPad app Paper by FiftyThree.
The App Store took nearly 3 years, 8 months to reach 25 billion downloads, with the next 25 billion downloads requiring only about 14.5 months.
With the last 25 billion downloads coming over a period of 14.5 months, Apple's pace is now at over 20 billion downloads per year or over 50 million per day. As tracked by our sister site AppShopper, Apple has approved a total of nearly 1.2 million apps for the App Store since its launch, with nearly 850,000 of them currently available in the store.