It's not a mistake, there won't be student discounts on the ipods anymore (a few people have contacted apple to confirm this and it's been reported on a few blogs etc). I think the reason is that they also did a price drop. In particular, the price drop on the main ipods actually works out more compared to what you used to save using the student discount.
iBot, you need to go to the uk apple store website and look down the right hand column,there will be a link to the education store. You need to be using a computer at your uni/college because they detect the IP address.