**Editor’s note: Please click here for our recent roundup of iPhone 5 speculation or here for our list of July’s hottest selling smartphones to see how the iPhone and Motorola devices stacked up against the competition.**

On the heels of a very successful run by the Droid Razr Maxx, Motorola is poised to unveil its biggest and potentially most successful smartphone to date the Droid Razr HD.

The Maxx has been among the top three sellers at Verizon Wireless since making its debut in the spring, despite hanging on to a $300 price tag for most of that time. The latest speculation is that Motorola will announce the new Droid at an event Sept. 5, according to the Christian Post. While you’d anticipate a release date in the week or two following an announcement, reports are mixed: While some of the latest Internet rumors point to a September launch, others from earlier this month say we won’t see the Razr HD until October.

It’ll need to hit the shelves before Sept. 21 the expected debut of the next-generation iPhone or plan to get lost in iPhone madness.

Videos purporting to show off the Razr HD hit YouTube a few days ago but have since been pulled due to “copyright issues with Motorola Mobility.” The device is said to come with packed with a 1.5GHz processor, 8MP camera and 4.6-inch, 720p display, according to PC World. Also look for Android 4.0.4 (Ice Cream Sandwich) installed, and a battery that is greatly improved over the original Razr smartphone but not as large as the one in the Maxx.

The Razr HD provides another important opportunity for Motorola, which is way behind Samsung and Apple in the smartphone race. Foreign manufacturers Nokia, HTC and ZTE all beat the Illinois-based company in smartphone shipments last quarter.