Im not.. it was known that he had a bad case of "stomach"-cancer.
Its a wonder that he lived that long as he was affected by it since 2004. (The year of the diagnosis).
He was a great inventor, buisnessman and visionary.
But also a ice cold capitalist who sold products with a really gross imbalance of the price- performance ratio.
Also the Apple-Systems were never really free for programmers and developers (only if you pay charges).
But nevertheless a great character has disappeard
R.I.P. Steve Jobs