More leaked documents from inside Verizon Wireless are confirming that the Samsung Galaxy Tab will be launching soon. Verizon Wireless announced the device to their employees first by released the documents pictured, and mentions that an announcement will be made tomorrow about the "upcoming launch."
Phandroid notes that "this week’s Samsung event being held in New York will be dedicated to the American unveiling of the slate." I wouldn't be surprised if a version for Verizon, AT&T, and Sprint were all unveiled at the same time. Maybe even one for T-Mobile as well, since we haven't heard anything against it.
Here is another picture of a Verizon Wireless internal document thanks to Droid-Life:
We have seen fairly solid evidence for a variant of the Galaxy S headed for AT&T, but Droid-Life comments that "VZW is at least talking like they will be one of the first to launch the first legitimate Android tablet." Phandroid seems to agree, anticipating a release "in October or November at the latest."
Images from Droid-Life