iphone - What's up with the .NIB -> .XIB?

Question

What's up with the NIB->XIB change somewhere between XCode 3.0 to 3.1? Is there any difference with this name change that I should know while I go through tutorials that mention nothing but the .nib file?

Answer 1

XIB's are very cool. they are basically an un-compiled NIB (in XML format if memory serves me)

during the build process they are converted to NIB's to be deployed in the final product.