Apple's iPad 4 is set to celebrate its first birthday in November, which means it's almost time for a brand new iPad to come along. Here, we ask whether or not it's worth buying an iPad 4 or waiting for Apple to release the iPad 5 later this year.Related StoriesHow to speed up a slow iPhone 4, iPhone 3GS or other older iPhone handsetiPod buying advice: which iPod should you buy?How t
