Samsung Galaxy S4 Android 4.4 KitKat update is on its way. While there's little doubt about it, there are still a lot of mysteries about the Galaxy S4's next major Android update. Here are some predictions about the coming Samsung Galaxy S4 Android 4.4 KitKat update, its changes, release dates and more.

In November 2013, Google began rolling out Android 4.4 KitKat, its new major Android upgrade, which replaced Android 4.3 Jelly Bean as the latest version of mobile software for Google tablets and smartphones. Google's Android manufacturers confirmed a couple of Android 4.4 KitKat updates, including upgrades for the HTC One, Sony Xperia Z, Moto X and more. It was Samsung, the biggest Android manufacturer in the world, which remained silent.

Rumors noted Galaxy S4 Android 4.4 KitKat update will arrive in February or March but no exact date was revealed. Other reports claimed Samsung will roll out the Galaxy Note 2 and Galaxy S3 Android 4.4 KitKat updates in March, after the Galaxy S4 Android 4.4 KitKat update arrives. But French carrier SFR also suggested a Galaxy 4 KitKat update in January or February but briefly pulled the information.

Currently, Galaxy S4 Android 4.4 KitKat update is reportedly not ready to roll out as it requires more testings. It's not a good sign for a January update and makes February seem pretty bleak. With caution, it is predicted Galaxy S4 might arrive at the end of April.

A standard Samsung update slowly rolls out and pushes to an increasing number of variants in several regions. Samsung has never pushed out hundreds of updates at the same time. The company will continue to push the update once it's deemed safe. Samsung also released updates without much warning. U.S. carriers are expected to give a full change log for the updates to alert users of enhancements, fixes and new features.

Samsung Galaxy S4 Android 4.4 KitKat update has leaked out many times before and leaks were important because aside from allowing users to upgrade earlier, it also has detailed features that mirror the Galaxy Note 3's update. There were UI tweaks, keyboard changes, speed improvements, emoji support and more. It was also expected that bug fixes will dominate the Galaxy S4 change log as the Korean company works to stabilize ahead of the next major release later in 2014, which could include the new TouchWiz UI on the Galaxy S5.