Just in time to prepare your apps for the Galaxy Note 10.1, Samsung has released the first major revision to its stylus SDK to developers. The S-Pen Software Development Kit 2.0 expands on the tools first released even before the original Samsung Galaxy Note, allowing for various enhancements to pen input accuracy and new APIs for third-party applications to take advantage of. You can download the updated SDK at Samsung’s Innovator developer hub.

The additional resources come just one day after Samsung announced its S-Pen app contest, with a whopping $100,000 as a top prize. Developers can submit their completed apps before April 2nd to be in consideration, and there are also large cash prizes for runners-up. Earlier this week Samsung revealed its second major pen-based product, the Galaxy Note 10.1, an expansion of Samsung’s Galaxy Tab line to include the Wacom digitizer technology found on the original Note. There’s no word on price or availability, nut the WiFi version should hit retail in the next couple of months.

Building on the 1.5 release, the 2.0 SDK adds SCanvasView for animations and special video and sound effects, and Samsung Animated Multimedia Messaging Library Class for decoding various snippits of drawing and contextual data. Various bug fixes and enhancements are also along for the ride, most notably in stroke rendering and the undo function. Happy coding, developers – be sure to check out our hands-on look at the Galaxy Note 10.1 for a preview of your target hardware.

[via IntoMobile]