Samsung recently announced the Galaxy Note 5 and the Galaxy S6 edge+ at Samsung Galaxy Unpacked 2015. The next major version of Android, the Android M is coming this fall. Some rumors suggest that it will be named as Android Marshmallow.
Android M will introduce a number of new features for Android devices. Samsung has officially posted an infographic showing some of the features that Samsung devices will get after they upgrade to Android M. The new features include app permissions, battery saver, and improved memory management. Here is the complete infographic from Samsung.
Samsung Galaxy S6, Galaxy S6 Edge, Galaxy S6 edge+, Galaxy Note 5, Galaxy Note 4, Galaxy Note Edge and Galaxy S5 are the devices which will be getting the Android M update foe sure. However, Its just a guess and this list is not official.