Cnet - One group, led by Xbox godfather J Allard, was pushing for a sleek, two-screen tablet called the Courier that users controlled with their finger or a pen. But it had a problem: It was running a modified version of Windows.
That ran headlong into the vision of tablet computing laid out by Steven Sinofsky, the head of Microsoft's Windows division. Sinofsky was wary of any product--let alone one from inside Microsoft's walls--that threatened the foundation of Microsoft's flagship operating system. But Sinofsky's tablet-friendly version of Windows was more than two years away.