I've a confession to make: I wasn't planning to buy an iPad HD, but my mind has been changed. Speculation about the third-gen Apple tablet has reached fever-pitch, with everything from a Retina Display-style resolution boost to a significant processor jump and better cameras tipped. Despite the improvements, though - and despite how often I'm accused of being an Apple fan-boy in the comments - the upgrade talk had left me cold. So what's swung me to eye my credit card hungrily? The talk of "Feel Screen" style tactile touch.