About half the size of the Ipad and roughly double the size of the Iphone Samsung's galaxy tab is based on the Google's android OS and supports flash. It has a small camera on the back with built in flash which amongst other things can take panorama photo's. A demo of the Samsung galaxy tab launched yesterday can be seen here and here. And if thats not enough here is the official sales commercial.
Prepare for a flood from other manufactures (such as Dell , HP Toshiba and Microsoft) offering similar devices as competitors challenge Apples dominance in the market place for tablet devices. Don't be surprised though if Apple comes out in 12months time with a 7inch version of the Ipad as rumors are already circulating this could be a possibility.