[arjunrc]

Do you have a reference for this development being in secret?

I think both Jobs' biographies detailed Forstall & Fadell's development, but I thought they knew about each other, working on Mac to Phone & iPod to Phone concepts respectively.

[kabouseng]

Hmmm actually I am not 100% sure, only from what I myself remember reading about it I interpreted it as they they didn't know about each other because the projects in general was conducted in such secrecy. I'll have a look if I can find anything.