Samsung has reportedly started development of Android 7.0 Nougat firmware for the Samsung Galaxy S6 and Galaxy S6 Edge. According to sources, the initial Android Nougat firmware for the S6 series carries build number XXS5DPK7. However, you can expect the build number to change when Samsung finally rolls out the firmware update to S6 and S6 Edge owners around the world.
According to industry analysts, the Samsung Galaxy S6 and Galaxy S6 Edge are unlikely to get an update before 2017. Meanwhile, Samsung most likely will not release Android 7.0 Nougat to the Galaxy S7 and Galaxy S7 Edge before next year. Hence, you can expect new Android 7.0 Nougat updates to all the previous handsets before the end of Q1 2017.
You should note that Android Nougat will incorporate several new features to Samsung handsets. However, there is no confirmation as to whether the new UX will be made available to the flagships released in 2015.
As of writing this, the Android 7.0 Nougat beta program for the Galaxy S7 series is in progress. Hence, we expect Samsung to unveil the Android 7 firmware update within the next few months.
Samsung is currently collecting feedback from users about the various bugs in the new update. The company will launch the final update after addressing all the bugs. Android platform requires updates on a regular basis. Hence, you can expect several iterations of Android 7 update until the bugs are fixed.
On the specifications front, Samsung Galaxy S6 features 5.1-inch Super AMOLED display, Exynos 7420 processor, Mali-T760MP8 graphics, 3GB RAM, up to 128GB storage, 16MP/5MP camera loaded with Android 5.0.2 Lollipop. A 2550mAh battery completes the package.
It is to be said that the Galaxy S6 and Galaxy S6 Edge has set new benchmarks in the smartphone segment. Hence, it remains to be seen as to how the company integrates the update.