The Samsung Galaxy S6, Galaxy S6 Edge, Galaxy S6 Edge+ and Galaxy Note 5 are reportedly set to receive a "major update" that Samsung is preparing, leading many to speculate that the four flagships will be one of the first handsets to receive Android 6.0 Marshmallow.

SamMobile reports that the next update to roll out to the smartphones will be much bigger than the recent ones. With nothing between Android 5.1.1 Lollipop and Android 6.0 Marshmallow, the best guess is the major update will be an entire jump to a new version of the operating system.

No details were actually provided by the website's sources, except that the Galaxy S6 Edge, which currently has a firmware version of G925FXXU2COH2 will be updated to G925FXXU3COI6. There is, of course, the possibility that the update reportedly being prepared is not an OS version bump but may simply be changes to user-facing features.

However, with Android 6.0 Marshmallow ready to be unveiled to the world on Sept. 29, it makes sense for Samsung to be getting ready to upgrade its phones early. The South Korean company is usually one of the first Android phone manufacturers to roll out new Android versions to its smartphones, although being first does not always mean it will roll out the updates quickly.

When Android Lollipop was launched in November, for instance, Samsung was among the first to upgrade its then-flagship Galaxy S5 to the new OS, but only around two months after Google rolled it out.

It won't be surprising if Samsung rolls out Android Marshmallow to its current flagships. The oft-ignored Galaxy Note 4 is also reported to receive the upgrade. However, the more important question to ask is how soon users can expect the update to arrive on their smartphones. One thing where iOS trumps Android really hard is the update schedule. While iPhone owners always receive their updates days after Apple releases them, Android users are left in the dust waiting for months before they can get their hands on the new OS versions.

If the report about Samsung already working on the "major update" this early certainly points to Android Marshmallow, then perhaps Samsung customers, at least those who own one of Samsung's expensive flagships, can finally see a relatively quick update soon.