Samsung Galaxy E7 is expected to get the official Android 6.0 Marshmallow over the air in the first half of 2016. According to recent leak, the Marshmallow build is just waiting for approval.

The Android 6.0 Marshmallow update will be rolling out to the Samsung Galaxy E7 smartphone with model number SM-E700H next year. The device is one of the few additions to Samsung's Marshmallow roadmap.

Aside from SM-E700H, here's a complete list of the model numbers qualified for the upgrade with their corresponding software version.

Samsung Galaxy E7 is a mid-range smartphone released in February 2015. The device has a 5.5-inch display made of a Super AMOLED capacitive touchscreen with protection Corning Gorilla Glass 4. It boasts a 13 MP main camera, a 5 MP front camera, 2 GB of RAM and non-removable 2,950 mAh battery.

Android 6.0 Marshmallow build will bring in improvements in Android Run Time and flex storage.

The Android Run Time gets prominent improvements since its debut in Android 4.4 KitKat, when it was still an optional feature. With Lollipop, the Android RT revolved with a Default setting instead of Dalvik cache to advance performance and help manage RAM usage. With Marshmallow, the feature will improve the performance of the device and also helps control battery consumption. In the first maintenance release of Marshmallow, the feature is expected to bring more improvements.

Meanwhile, Flex storage is a combined storage feature for internal and external space, which makes it applicable only to devices with microSD slot. With Marshmallow, it can format external memory card and pool to internal storage so that users can utilize to install apps and app data. However, slower memory card may trigger a low speed warning.

Marshmallow also brings improvements in app menu, app search bar and app standby, among others.