Chinese parts vendor TVC-Mall has begun offering slightly different “iPhone 5” home buttons for sale in both black and white. “Different from iPhone 4S 4, the iPhone 5 home button is round in the centre and square outside as the pictures show.” We think that the rounded square portion of the new home button will lie below the surface of the iPhone and that there will not be any noticeable difference to users.

This new button can mean that Apple is working on a new design for the next generation iPhone.

Source [macrumors]