Alleged Galaxy Note 4 Marshmallow Update Leak
The Samsung Galaxy Note 5 and Galaxy S6 Marshmallow updates have both leaked and it looks the Galaxy Note 4 Marshmallow update has done the same.
Napidroid claims that they've received a Galaxy Note 4 Marshmallow build on one of their devices. SamMobile, a site that's known for its inside information, claims that the leak is the real deal. It appears that the update was pushed out by mistake.
The T-Mobile Galaxy Note 5 Marshmallow update was also pushed out by mistake so it's very possible that this rolled out in error as well.
We haven't seen any other claims from users in Hungary (where this rolled out) or anywhere else so we don't think a widespread roll out has begun.