Samsung Electronics America sent out "Save the date" notes to the press that they will be announcing a new Galaxy device on August 15. They kept the note all mysterious and offered no info on the device, but the words "major announcement and unveiling of the newest GALAXY device" are enough to draw plenty of interest on their own.
So, what's it going to be? The Samsung Galaxy Note II has been going around the rumor mill for a while now, but the latest rumors put its announcement two weeks later -August 30, just before the IFA start.
The other Note - the Galaxy Note 10.1 - is a likelier candidate. It has gone through a redesign (its CPU got updated to four cores and a slot was added for the S Pen stylus) and even briefly popped up (by mistake) for pre-order on J&R. The pre-order deal was $499 for the 16GB version and $549 for the 32GB version, but that page has since been pulled.
It has been pointed out that the note comes from Samsung Electronics America, not Samsung Telecommunications America (who usually handle phones), which lends some credence to the Note 10.1 theory.
Then there's the possibility of something new (or new to America at least). Anyway, the full details will be revealed during the August 15 press conference, but maybe the upcoming invitation for the event will give us some more info.
Note: the image above is just an old Galaxy S teaser image and not from the note sent out by Samsung.