- Designer Sebastiaan de With has updated his iPhone/iPad icon PSD file, adding support for iOS 4 and 114x114px icons.
http://blog.cocoia.com/2010/iphone-4-icon-psd-file/
- Neven Mrgan leverages that file and offers lots of comments and tips for making clear icons using Photoshop and Illustrator.
http://mrgan.tumblr.com/post/708404794/ios-app-icon-sizes

Don Norman at Business of Software 2009
Imagine you’re on the first slide of your powerpoint presentation and want to move to the next slide. Your remote control has two buttons. They are unmarked, but one button points up and one button points down.

Which button do you press?

http://blog.businessofsoftware.org/2010/06/don-norman-at-business-of-software-2010.html

Very interesting

Pascal