It looks like Razer, who is known for making high quality PC gaming accessories, is working on their own iPhone game controller. The always reliable @evleaks today posted several press shots of the new device called "Kazuyo."
As you can see from the leaked image above, the gaming pad features a directional pad, shoulder buttons, and four regular buttons. There also appears to be a speaker on the right hand side of the controller.
Pricing, availability and what games will support the Razer Kazuyo controller are unknown at this time.
Several accessory makers have already taken advantage of Apple's new MFi (Made for iOS) game controller support since it was announced back in June. Logitech was the first to release the $99 PowerShell, and Moga is currently accepting pre-registration for their Ace Power device. ClamCase also announced the Bluetooth-enabled iOS 7 GameCase back in September.