Think back to two or three years ago. Back then, there were two predicted game-changers for the mobile games industry: 3D and connectivity.
There were even well-attended conferences purely devoted to these two subjects, and every developer and publisher was buzzing about them.
Now think about today, and what's causing similar levels of excitement in 2008. It's not so much 3D and connectivity, but instead it's two other features: touchscreens and motion-sensing.