Samsung is working on a “major update” for its latest flagships that could bring Google’s upcoming Android 6.0 Marshmallow software, according to sources familiar with the plans. 

The update, which is expected to reach the Galaxy Note 5, the Galaxy S6, and the Galaxy S6 edge and S6 edge+, “will be bigger than the usual updates we see every now and then,” reports the reliable SamMobile. But it’s not totally clear what that means right now.

Most of Samsung’s latest handsets are already running the most recent version of Lollipop, so the only big upgrade that seems likely at this stage is the one for Marshmallow. Google hasn’t made its update available to the public yet, but it will have provided its partners with the code.

If the update is not for Marshmallow, then it could bring major changes to Samsung’s TouchWiz user interface instead. I’d like to think the company will follow Sony’s lead and make its own software similar to pure Android, but that seems a little unlikely.

“The firmware version for the S6 edge will change from G925FXXU2COH2 to G925FXXU3COI6,”  adds SamMobile. “The jump from U2 to U3 in the build number is a good indication that we will be seeing considerable user-facing changes.”

There’s no word on when this update will be available, unfortunately, but we hope to hear more soon. Just don’t expect it to drop imminently.

• SourceSamMobile