Believe it or not, there's a new project in town that intends to put your iPhone on the front lines of personal defense. The Yellow Jacket is designed as the first iPhone case to pack a 650K volt stun gun on board. With all of that extra juice, the case also provides an extra 20 hours of battery life for your mobile device.

Safety features are built in to ensure you don't get zapped while playing Angry Birds, but if you need to incapacitate an attacker, firing up the stun gun takes less than a second. Flip a safety switch and turn down the cap to expose the electrodes at the top of the case. Pressing the activation button will send 650K volts coursing through anyone unlucky enough to be touching the contacts.

If you're a retro video game fan you might remember playing Summer Games from Epyx. Well now you can watch the real thing on your iPhone or iPad with two new apps from NBC Olympics. Featuring everything you need to know about the London 2012 Olympic Games, the first app is called NBC Olympics.

This app will include highlights, schedules for TV and online programming, live event results, columns and features a Primetime Companion designed to be used while watching the games on TV. The second app, NBC Olympics Live Extra, will stream live events for cable, satellite and telco TV customers totaling over 3,500 hours of sporting competition.

Looking for a better way to mute your iPhone? Typically the device can be silenced or put into vibrate mode with one switch. Maybe like some iPhone owners your ring/silent switch is broken. We've featured ways to get around this problem in the past, but now there's a simple, elegant solution for those with jailbroken devices.

This simple alternative to silence the device ringer or headphone volume is a tweak in Cydia called TapVolumeToMute. After the tweak is installed, there are two steps to mute the iPhone or bring the volume back to its previous level.

Photos of a scale model of the next generation iPhone have leaked to Gotta Be Mobile from a source within Apple's supply chain. Assuming these images are authentic, the engineering sample confirms several parts leaks and previous reports of a larger form factor.

According to the engineering sample, which is typically used to mock up a product when fine tuning manufacturing processes, the iPhone 5 will be longer than its predecessor to accommodate a larger 16:9 display. Other aspects of the new design are also apparent in the metal model, such as camera placement similar to the iPhone 4S.

Sometimes you're in the middle of reading something on the iPhone and an incoming banner notification suddenly covers up the top of the screen. This can be irritating if the content is important or you're doing something else that requires more display real estate. If you're iPhone is jailbroken, now you can install CoverMeNot to improve these banner notifications.

What CoverMeNot does is simple but effective. The images above illustrate what happens when the tweak is installed and a notification banner appears. The status bar at the top of the screen is automatically made wider to match the size of the notification banner.