After installing 3.0 GM on my 2G iPhone I immediately noticed some visual changes in the keyboard. The difference was subtle but noticeable and it bugged me so much that I downgraded back to 2.2.1 just to make some screenshots for comparison 
If you flip between the two pictures below, you'll spot the differences.
Now, the question is, with the differences so subtle, why bother doing them at all? I can't imagine Steve Jobs saying: "Hey, {insert name of
employee here}, reduce the font weight here by 5% and decrease the contrast of the background gradient by 3%". It's a well-known fact that Apple is unhealthily obsessed with the design, however I can't say that the second picture represents any significant improvement in usability, both are equally good.
If you flip between the two pictures below, you'll spot the differences.
Now, the question is, with the differences so subtle, why bother doing them at all? I can't imagine Steve Jobs saying: "Hey, {insert name of
employee here}, reduce the font weight here by 5% and decrease the contrast of the background gradient by 3%". It's a well-known fact that Apple is unhealthily obsessed with the design, however I can't say that the second picture represents any significant improvement in usability, both are equally good.
