A beta version of Android 6.0 Marshmallow update for Samsung Galaxy S6 is reportedly already made but Samsung has not yet rolled it out on its devices for testing. Other Samsung devices set to receive Android Marshmallow are Galaxy S5, Galaxy Note 5, Galaxy Note 4, Galaxy S6 Edge, and Galaxy S6 Edge Plus.

Leaks reveal that a beta version of Android 6.0 Marshmallow for Samsung Galaxy S6 is already ready according to a report by PC-Tablet. However, Samsung has not yet released the Android Marshmallow beta update on its Galaxy S6 devices for testing.

With Google's launch of Nexus devices with Android 6.0 Marshmallow, Samsung will likely push out Android M updates on the Galaxy S6 and other devices soon. Although there is no official release date yet, Android 6.0 Marshmallow will come to Samsung Galaxy S6 before 2015 ends. Other devices are set to receive Android M later in 2016.

Samsung stated that its earlier devices will receive the Android 6.0 Marshmallow update. According to Neurogadget's report, such Samsung devices include the Galaxy S5, Galaxy Note 5, Galaxy S6 Edge, Galaxy S6 Edge Plus, Galaxy Note 4, and other units able to run on Android 5.1.1 Lollipop.

Android 6.0 Marshmallow might come later than expected since Samsung has just recently released Android 5.1.1 Lollipop updates to its flagships. The Android 5.1.1 Lollipop update contained fixes to bugs like the Stagefright vulnerability attacking user privacy. The recent Stagefright bug reportedly targets MP3 and MP4 files instead of MMS to secretly access devices.

To solve this vulnerability, Samsung is expected to continue rolling out Android 5.1.1 Lollipop updates to its smartphones before launching Android M.  Venture Capital Post earlier reported that once Android 6.0 Marshmallow is released, it will bring new features and improvements. Such features include Android Pay, enhanced Google Now on Tap, a power-saving feature, an improved phone dialer app, and app permissions.

Samsung will reportedly roll out Android 6.0 Marshmallow updates to users in South Korea first. It will then trickle down Android M to its customers in the US, UK, South Asia, and other countries.