I'm creating .icns files using the following icon set (as specified in the HIG and exposed via Xcode):
icon_16x16.png
icon_16x16@2x.png
icon_32x32.png
icon_32x32@2x.png
icon_128x128.png
icon_128x128@2x.png
icon_256x256.png
icon_256x256@2x.png
icon_512x512.png
icon_512x512@2x.png
This is probably a silly question, but will .icns files generated with the above set of icons work correctly in all versions of OS X from 10.7 on?