Google is naming its latest Android mobile operating system after Kit Kat candy bars.

The tech giant, which is known for nicknaming its Android mobile operating systems for smartphones and tablets after desserts, has for the first time chosen a brand-name candy for its 4.4 version that's expected to launch this fall.

Kit Kat packaging will show Android's green robot mascot breaking a Kit Kat bar.

The new Kit Kat label featuring Android's green robot mascot. AP Photo/The Hershey Company

Financial terms weren't disclosed for the sweet deal between Google and Hershey Co., which makes Kit Kat. But the deal shows that naming a stadium or sponsoring a TV show can be seen as old school. The latest marketing craze may be to slap a brand name on a tech product.

Google approached Hershey about six to nine months ago for permission to use the name, said Jennifer Podhajsky, vice president of U.S. chocolate at Hershey, which licenses the Kit Kat brand in the U.S., while Nestle owns the worldwide brand.

Podhajsky said that Kit Kat's jingle is a good fit for people taking a break to look at their smartphones or tablets. She added that the deal appeals to Hershey because Android hits the sweet spot of Kit Kat eaters, who are typically between the ages of 18 and 34.

"Kit Kat consumers are young, vibrant consumers of candy and chocolate bars, and that's a nice match with Android," Podhajsky said.

The Kit Kat name was unexpected since tech pundits have speculated for months that the next operating system would be called Key Lime Pie. Marc Vanlerberghe, director of Android Marketing, said the name was chosen because Kit Kat bars have been a "favorite go-to snack among the team since the early days of Android."

The Android 4.4 Kit Kat system is expected to launch in October. The software is now running on more than 750 million smartphones and tablets throughout the world, making it the world's most widely used mobile operating system.

Here's a look at Google's history of naming each version of the system after sweet treats:

2008

Android 1.0 -- no nickname

2009

Android 1.1 -- no nickname

Android 1.5 -- Cupcake

Android 1.6 -- Donut

Android 2.0 -- Eclair

2010

Android 2.2 -- Froyo

Android 2.3 -- Gingerbread

2011

Android 3.0 -- Honeycomb

Android 4.0 -- Ice Cream Sandwich

2012

Android 4.1 -- Jelly Bean

2013

Android 4.4 -- KitKat

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