A leaked image was found from Samsung Mobile Unpacked was found earlier showing an image with the names of three unannounced products: Samsung Galaxy Note, Samsung Wave 3, and Samsung Galaxy Tab 7.7. These products will be revealed at IFA September 1st, 2011 in Berlin. We were already expecting a second generation Galaxy Tab 7, but it now looks like it will be known as the Galaxy Tab 7.7. We can assume that it will have a 7.7 inch screen because of its name. We do not know anything about the specs, but it is safe to say that it will feature at least dual-core processor running Honeycomb 3.2 with TouchWiz UX.
The Galaxy Note could be a note taking device to replace the vaporware that Note Slate promised, but that is complete speculation.
Source: This is my Next