If you're loading an image named "image" the search paths are likely to be the same as they've always been:
iPhone:
-
image@2x~iphone.png (retina only)
-
image@2x.png (retina only)
-
image~iphone.png
-
image.png
iPad: -
image@2x~ipad.png (retina only)
-
image@2x.png (retina only)
-
image~ipad.png
-
image.png