Key Lime Pie
Key Lime Pie is the dessert-themed Android codename for the upcoming 4.4 update of the open source Android mobile operating system. Key Lime Pie is expected to be released in late 2013 as the successor to the v4.1, v4.2 and v4.3 "Jelly Bean" updates. New features and enhancements in Key Lime Pie are unknown at this point.
Key Lime Pie will follow a number of earlier updates for Android, including Cupcake (v1.5), Donut (v1.6), Eclair (v2.0), FroYo (v2.2), Gingerbread (v2.3), Honeycomb (v3.0), Ice Cream Sandwich (v4.0) and Jelly Bean (v4.1 and v4.2). The follow-up to Key Lime Pie is expected to use the codename "Lemon Meringue."
From Key Lime Pie to KitKat
On September 03, 2013, Google confirmed that the next version of Android will be called KitKat (Android 4.4), and not Key Lime Pie as the Android version had been internally referred to. KitKat is the trademarked name of the chocolate candy bar made by Nestle and licensed by Hershey in the United States.
According to several online reports, KitKat is a favorite snack of Android coders — and Google reached out to Nestle for an agreement on using KitKat as the codename for Android 4.4. Online reports claim no money was exchanged in the deal.