Digital Trends - WOA sounds like what you might tell a horse when you want it to stop, but it’s also the working acronym for Windows on ARM, which Microsoft’s Steven Sinofsky recently detailed in a revealing blog post. I’m clearly going to have some fun with the acronym, but the new details of the operating system have some pretty heavy implications, too.There really are some little nuggets in Steven’s Blog post that suggest this could be a game changer on a lot of fronts.It might even make tablets as we know them obsolete.