title: ViewController_iPad.xib vs ViewController~ipad.xib
body: <p>I am working on a tutorial and something interesting caught my attention. I just created a Single View Application Project and I noticed two .xib files, one named <code>ViewController_iPhone.xib</code>, one named <code>ViewController_iPad.xib</code>. In my projects, if I wanted different .xibs for iPhone and iPad I would use <code>ViewController.xib</code> for iPhone and <code>ViewController~ipad.xib</code> for iPad. I kind of understand that this may be a new naming convention, but can I use this naming convention event if I target older iOS versions?
  Also this happens in xCode 4.6</p>
  
  <p>Thank you.</p>