1.kh birth by sleep
2.kh 1/ final mix
3.kh chain of memories or re:chain of memories
4.kh 358/2 days
5.kingdom hearts 1.5 (an alternative or remake of kh1 and kh com/re:com with every cutscene of kh 358/2 days together) p.s. i believe it comes out half way through 2013 for ps3.
6.kh 2/ final mix+