A report on MarketWatch notes that Apple has unveiled a new line of iMacs at today’s media event in San Francisco. “The company introduced a new iMac model with an aluminum body and glass screens, similar to the iPhone. The new iMac will come in two models, a 20-inch and a 24-inch model. Two 20-inch models will be available for US$1,199 and $1,499, while the 24-inch model will run $1,799.”