It seems that the back button is the latest hip thing to complain about with Windows Phone, with rumours about Microsoft dropping the hardware back button and then not.
As a Windows Phone app developer I absolutely do not want to have to add back buttons to all my pages in my apps – that would be horrible…
One of the other rumours is that physical buttons may no longer be required, but instead the Back, Start, and Search buttons could be made virtual and appear at the bottom of the actual touch screen itself. But if this were to happen, given that screen size and resolutions remain the same then it would have to mean that apps would have less vertical space to present themselves in. While this might work, and enable more manufacturers to make cheaper phones, I still like my Lumia hardware back button – perhaps higher-end handsets will continue with the hardware buttons.