As the anticipated announcement of an iPad refresh draws nearer, the tidbits of insider information are seeping out at faster rates.

Among the latest: a report that the next generation of the Apple iPad features a high-resolution Retina display, powered by a dual-core graphics chip. The high-resolution screen and faster GPU would allows the iPad 2 to play 1080p HD video, according to an AppleInsider report citing sources familiar with the matters.

The new graphics chip inside the yet-unannounced iPad 2 is said to pack four times the processing capability of the A4 chips in current iPads, iPhone 4 and Apple TV.

The video chip would run alongside a multiple-core ARM Cortex A9 general-purpose processor inside the tablet. It is also possible Apple would extend the new graphics and processing chips to its entire line of iOS products, including the next-generation iPhone, iPod Touch, and Apple TV.

Besides the latest speculation on the processing power of the iPad 2, the next-generation tablet is rumored to also include dual cameras (one on the back with flash and one on the front for FaceTime), as well as a slimmer design and a larger speaker. Leaked photos allegedly depicting the display of the iPad 2 indicate that the tablet will also feature a high-resolution screen.

Another hot iPad 2 rumour is that the tablet will feature a triple-mode wireless chip, which would allow it to run on both of the incompatible networks used by US mobile companies (GSM + UMTS or CDMA).  This triple-mode chip could also make its way on the next version of the iPhone, expected this summer. This won't make a difference in the UK, where the current iPhone and iPad models support the network type offered by all the major mobile companies.