Default.png for iphone, Default4.png for iPhone 4 (or is it [email protected]?), and Default-iPad.png. Is that correct?
+1
A:
Default.png and [email protected] and Default-iPad.png (not 100% sure on this one)
if you specify your own name like MyLaunchImage.png, the iPad specific version would be MyLaunchImage~ipad.png. Although you could include a MyLaunchImage~iphone.png image for the iPhone specific version (and a MyLaunchImage@2x~iphone.png for the high-resolution variant)
taken from apple documentation