Smartphones and tablets, the two hottest categories of consumer devices right now, are dominated by ARM processor designs, so when the company speaks up about its product roadmap, we're inclined to listen in close. The next generation of ARM system-on-chip has been dubbed Cortex-A15 and was expected to ship in 2013, but that's now been accelerated slightly to late 2012, which is when we're told to expect actual devices on sale with A15 silicon on board. Single- and dual-core variants will get us started, before qu