I believe it shows just how good a photo you can take with an iPhone and as I understand the iPhone 4s has an even better camera!
Currently my iPhone 4 is still under contract but in May this year I will be able to upgrade. Although the rumours are starting to come out about the iPhone 5 and it's possible release this August! So maybe I will wait till then!
Anyway, I can still have fun with current iPhone and keep shooting pictures!