Android developers are all too familiar with not-so-hot emulator performance, so it's a relief that there's now an system image in a native x86 for testing. While you'll still likely want to test on ARM, the x86 image will both help ferret out bugs specific to Intel's architecture as well as provide a much faster experience debugging apps now that the ARM-to-Intel translation isn't needed on top of running a whole second operating system. It's not perfectly up to date, running on Android 4.0.3, but it's close enough that the environment will mimic much of what users see -- and a big help if you're jumping into writing
