It should be available for you by Feb 29, 2012.
Three improvements in 1.0.6:
1. A lot more pictures are added. It is more fun to relate how Korean letters can be used to write what you know in other languages.
2. Full version now has 2 more chapters - 19 chapters in total. I had to divide the last chapter (picture summary chapter) into three chapters since it was a little bit too much to go through 80+ pages within one chapter.
3. When you click the pictures, it pronounces each letter and then the pronounce whole word, in a way that Koreans will read them out.
Korean Letters Lite version continues to be free, and now it has 2 more chapters - 5 chapters in total.
Happy Korean reading!