Today Apple unveiled new iMacs. The 20-inch and 24-inch iMacs are the latest editions of Apple’s all-in-one iMac design. They are made from aluminum and glass, and come with a new keyboard. Both the new keyboard and the iMac itself are thinner than the previous edition.Three new iMacs will be available immediately–two 20-inch models and one 24-inch model. The base 20-inch version will cost $1,199, and a more powerful 20-inch model will cost $1,499. The 24-inch model will cost $1,799, $200 less than the current 24-inch iMac.