How did Ive/Federighi do it?

[ntrigue]

Only thing Ive/Federighi did was reskin Forstall's app grid to make it look more feminine and add a few new features

This is not a big deal and all they did was buy iOS a couple more years before it starts to feel old again

And the iPhone wouldn't have been the best selling smartphone of all time without Forstall's work, the guy doesn't get enough respect IMO, history is being rewritten

You're quite simply incorrect. Consider parallax alone. Consider everything has a new animation.