[dikkiedirk]

  It's not a revamp, it is a completely new model (with completely different drivers as well as external design).
 
HE400 and HE400i are similar on name and price-point alone.

The HE-400i is a bit more expensive if it goes from 399 to 459. And yes, from what I read its a different design. If it is actually better remains to be heard. I just ordered on of the last HE-400 here in Holland. When they clear out the shop won't get new ones.