PW3 Any Kindlet development library?

Now that new firmware drop azw2 support, i really wanted to play KindleChineseChess on my kindle, but its in azw2 format, so grabbed the source and tried to compile.

But com.amazon.kindle.kindlet class seems to be missing from the project and a simple google search suggest it's from Amazon Kindle Development Kit, but it requires setup and applying the amazon sdk program.

So is there any other kindlet library available?