As promised, Samsung has released the first version of its S Pen SDK. The SDK will allow devs to create S Pen-enabled apps that will take advantage of the included S Pen in Galaxy Note. The SDK includes support for features like CanvasView, Width adjustment of Pen, eraser and undo/redo options.
Benchmark Note – Android Gingerbread 2.3.6 – http://samsungmobilers.ro/post.php?id=199