Samsung Galaxy Note 4 is in development for the Android 6.0 Marshmallow software as an official list has been revealed regarding the upgrade's expected time of arrival. Marshmallow will bring in key additions to overall performance including features and several apps improvements.

Samsung's official list of its Marshmallow plans disclosed that Galaxy Note 4 is finally coming to the over-the-air release. According to the list, the device is in the development phase in which Samsung incorporates its own software with Google's new build.

The testing phase will commence if development is deemed successful. In this stage, Samsung will evaluate the performance of Marshmallow and shall proceed to the official release if found out all set.

The official list also revealed that the Android 6.0 Marshmallow software will come to 20 models of Galaxy Note 4 by the first quarter of 2016. Previous reports have already speculated that it might roll out to Samsung devices beginning January.

Here is a complete list of Samsung Galaxy Note 4 models to receive the official Android 6.0 Marshmallow:

Meanwhile, Android 6.0 Marshmallow makes the vertical list of apps in the app drawer is quicker. With this, Google's Now Launcher will show up four icons users might want to use. These four app icons are the top suggestions of Google based on time of day, location and previous usage. Its downside this is that it will make home screen redundant since favorite apps are already mounted here.

However, this feature is preinstalled to Nexus devices only which means other Android phone users will have to download it.

Android 6.0 Marshmallow is also confirmed rolling out to Galaxy Note 5, Galaxy S6 Edge, Galaxy S6, Galaxy S6 Edge+ and Galaxy S5, among others.