Photos: Apple unveils new iMacs and apps

Three new iMacs were unveiled at an event held on Tuesday at Apple's Californian headquarters. There will be two 20-inch iMacs with different specifications, and a more expensive 24-inch model. The 20-inch systems will cost $1,199 (£590) or $1,499, depending on the configuration, and the 24-inch system will cost $1,799, $200 less than the current 24-inch iMac.