Apple is rumoured to have cut its iPad mini shipments to 10 - 12 million units in quarter two, indicating that a second-generation of the 7in tablet could be on its way.Related StoriesiPad 5 rumours: Apple's thinner, lighter 10in iPad to adopt thin-film touch panels used for iPad miniMid-week iPad 5 rumour rollup: Q4 release date, digital pens, lower price tagTablets may eclipse laptops in 2014, but there'