A high-durability ceramic glass-like back, a Micro-SIM, a front-facing camera, a screen resolution of 960 x 640 and a 5 megapixel back-facing camera with flash are just a few of the features slated for Apple's forthcoming iPhone.

These specs are some of the more credible rumors that have been appearing in the blogs in the lead-up to the (still rumored) release of Apple's next generation iPhone, the device tentatively dubbed the iPhone 4G.

On April 19 technology blog Gizmodo showed off pictures and video of a device they are saying is Apple's next iPhone.

"While Apple may tinker with the final packaging and design of the final phone, it's clear that the features in this lost-and-found next-generation iPhone are drastically new and drastically different from what came before," wrote Gizmodo's Jason Chen and Jesus Diaz.

The design of the phone in the pictures is drastically different from Apple's current 3GS model - so different in fact that Gizmodo believes it is just a provisional casing that will be refined before the device is released.

It has an aluminium border that circles the outside of the phone - which is much flatter and squarer than previous iPhone designs. Instead of the plastic buttons that feature on the 3GS, this new model has metal buttons. It also has a glass (or shiny plastic) back, a smaller but higher-resolution screen, a much larger battery, and a flash for taking photos in low light conditions.

Technology blog Engadget is also showing photos of a similar-looking phone captured appearing next to Apple's iPad in a photo that was leaked before the tablet was announced in January.

Apple's recent patent applications provide additional sources of speculation about the iPhone 4G. These include touch-sensitive casing (similar to that used in Apple's Magic Mouse) that would enable the user to interact with applications without touching the phone's screen, and motion-sensing cameras that convert finger taps or swipe gestures in front of the lens into commands such as "play," "fast forward" or "answer call."

On April 14 the news broke that Apple had booked the YBCA (Yerba Buena Center for Arts) in San Francisco for June 22. Most believe Apple will unveil their new iPhone at this event, while others state that an early-June announcement would make more sense and is closer to Apple's existing iPhone announcement schedule.

For additional iPhone 4G photos and specs head to: http://gizmodo.com/5520164/this-is-apples-next-iphone?skyline=true&s=i

A video of the iPhone 4G can be viewed here: http://www.youtube.com/watch?v=nxbHCR-W8zc&feature=player_embedded