[zmmmmm]

It's going to be really interesting if (as rumoured) they make major UI theme changes in iOS7. Until now Apple has reaped the benefits but not really had to pay the true price for the relatively inflexible approach with the UI. If they update the UI to look different, every app that hard coded images, colors, dimensions or other facets of the UI is going to suddenly look broken. It'll be really interesting to see how it goes.

[czr80]

They'll change, some things will break, we'll endure thousands of blog posts proclaiming the end of the iPhone, 80% of devs will race to fix their apps, life will go on...

[rimantas]

Not sure if I follow. If app uses custom styling it means it does not use OS theme, and hence is not influenced by its change. Also, developers will get an early access so they can test and fix things in advance.

[RyanZAG]

Some apps use default styling for half of their UI, and custom for the other half. When the default styling changes, it's going to have a strange effect of the custom components no longer fitting in.