For all the people saying that a Classic is just a q10 with a tool belt, let's look at all of the definite and potential improvements.
Larger battery, should have longer battery life.
Paratek antenna for improved reception is spotty areas and in buildings.
Larger, sharper LCD screen.
USB OTG and VGA output in addition to HDMI.
Improved speakers.
Those are what we know, plus these other likely improvements:
More reliable keyboard and also larger.
It should have better internal specs but that is unconfirmed.
Most of these features are not major changes, but they are the type of refinements that take an average device and make a great one.