Mystery phone

Like our tipster, at first glance we were sure this was a stretched out LG Optimus S when it showed up in some Sprint training materials with no explanation or even a hint attached.  But after a closer look at the buttons, and the area where the screen ends towards the bottom, we're pretty sure it isn't. 

We know that LG has something in the works for Mobile World Congress, but the leaks we've seen of the Optimus 3D don't match up either.  It's not the Optimus Black, or the Optimus 2X that we are currently fondling have for a review either.  In short, we have no idea what it is.  It could be some sort of crazy render -- we've all seen those before, but Sprint has been so quiet about their 2011 line-up we have to wonder if this is something we'll see at their Magical event on Feb 7.  In the end, we decided to share it so we can all discuss it together.  Hit the Android Central Rumored Device forums and share your conspiracy theories and thoughts.  Thanks anon tipster!