There's only so much you can do to improve the appearance of an app that's essentially a black screen with a six-digit number on it. But that's exactly what Google's done with the latest version of its Google Authenticator app, which has just been pushed out on the Android Market. The official changelog for version 0.87 notes "UI improvements" as the only new feature in this version. We'll have to take Google's word for it -- to us, it's still just a blank screen with a number on it.
In any case, Google Authenticator is an important app for those using two-step authentication for their Google account, so it's always best to keep things up to date. We've got the Android Market link for you after the break.