The Bottom Line
Android 4.4 KitKat is loaded with treats ranging from delicious eye candy to nutritious utilities, making it a worthy upgrade once your carrier makes it available. For the daring and impatient types, ROMs are out there if you're willing to void the warranty and root the device. But considering that much of KitKat's functionality is duplicated by third-party apps, it's probably not worth the risk. For developers, about a dozen new Android 4.4 APIs make KitKat the juiciest one yet.