When was this lens introduced, and is there any chance of it beeing replaced soon? (20-70 maybe?) for example at Photokina? I'm looking at it's price-history in Norway now, and it have severely fallen in price during the last six months. When I bought the 10D in October, this lens costed: $2100+ in Norway, and now it's down to: $1687. Local price-war going on (yeah, all numbers are "Cheapest at moment" for Norway), or could Canon be replacing this soon?

