The latest leak comes from an anonymous gadget leaker on Twitter named @evleaks. The photo appears to be a press rendering of a new phone called the HTC One. (HTC's current flagship is called the One X).
The photo looks strikingly similar to the iPhone 5, but with a slightly taller and wider screen. We'll have all the finalized details on the device next week, but take a look at the leaked photo below for a taste of what we'll see: