This is Apple culture at its best: No one ever talks about it. All employees are so loyal to this company that you can't even imagine one speaking about such insights.
I think it is more of fear about losing their job rather than loyalty. It is not uncommon to find that any leak will be tracked down and the leaker summarily fired.
It's just unprofessional to babble around about new tech like it's a cookie recipe.
Is it really so hard to imagine that employees at Apple feel loyalty to the company? Employee loyalty is not an uncommon thing.