Yet another Samsung Galaxy S3 prototype has been spotted, and like the last one we saw this model seems to be sporting a disguise. This time, however, there’s a throwback home button tucked below the on-screen Android 4.0 controls  – reminiscent of the one found on the good old Galaxy S2.

But since the design here is probably just a way to keep the GS3 from attracting unwanted attention, it might be more important to look at what’s displayed on the phone’s screen. As you can see, Samsung is at least pondering a prominently-displayed menu button alongside Google’s recommended trio of controls. That runs counter to Google’s official stance, which is that developers should leave the menu button behind and utilize the newer Action Bar instead.

That direction hasn’t been universally well-received by users, however. Many find Google’s removal of the button to be a source of frustration, so it’s possible that Samsung may simply be looking at ways to make their implementation of Android as irritation-free as possible. Just as the case we’re looking at is certainly not Samsung’s final design, the UI shown here could also just be an experiment.

The Galaxy S3 is set to be unveiled at Samsung Mobile Unpacked in about a week, so we’ll know then what Samsung has up its sleeve. Right now, the only thing we really know for certain is that the Galaxy S3 will definitely be the star of the show — it was pegged in the Mobile Unpacked app, which arrived in the Google Play store earlier this week.

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