While Samsung's August 15 media event has generally been assumed to be regarding the Galaxy Note 10.1, the latest media invite proves this beyond doubt.
The latest invite shows the outline of a tablet with a stylus slot on the side and the words "Meet the new way" written on the tablet. Unless Samsung has another tablet with stylus in the pipeline, this is definitely the Galaxy Note 10.1.
The event will be taking place in New York next week on Wednesday. Shortly after that, Samsung has another event planned for August 29, which we already know is for the next Galaxy Note.