Leaked parts listings from accessory manufacturers Griffin and Belkin suggest that the next generation tablet from Apple will be called the iPad HD. The naming scheme makes a lot of sense based on the expected Retina Display the iPad will include but if history has taught us anything, nothing is solid until Tim Cook says so.

Gizmodo received a tip from Michael Fonfara that the manufacturers are listing the device as the iPad HD in inventory. Fonfara included a purported screenshot to back up his claims and at this point in the game, it isn’t unreasonable to think that accessory manufacturers might have received product dimensions and marketing information from Apple to prepare their wares.

Furthermore, the gadget blog received a report from an anonymous reader showing a device known as the iPad HD connecting to a site as early as April 2011. The data supposedly shows a screen resolution of 2,048 x 1,536 and was captured using an application called Tapatalk that runs on iOS, Android and Blackberry.

Despite seeming extremely plausible, we encourage readers to digest this rumor with a grain of salt. As we have seen in the past, case manufacturers don’t always get it right either. If you recall with the iPhone 4S, there were multiple case designs showing up online that suggested we would see a totally redesigned iPhone 5. As we all know, that never came to fruition.