It’s coming.  I’m not sure on the implementation date but from what I recall it’s going to be 6 months no pro-ration and then $10 per month till it reaches a $50 minimum.

I don’t know all the details but it’s coming and it will be rolled out in 2009.

This will only improve Sprint’s value to customers.  As a premier carrier that doesn’t renew contracts when you change plans, it’s going to be another advantage for customers to pick Sprint.