Tech blogs are buzzing with anticipation ahead of Apple's expected unveiling of its third-generation iPad on Wednesday.

As is often the case with new Apple products, rumours surrounding some of the most eagerly anticipated features have made their way online, though that's not to say the company won't have any tricks left up its sleeve for Wednesday's event.

In fact, Apple seems to have hinted at one of the biggest changes, a high-resolution Retina Display, which could have a resolution of 2,048 by 1,536 pixels, about twice that found on the iPad 2.

As reported by AppleInsider.com, the invitation for Wednesday's press conference contained an image of what could be the new iPad display, with a finger pressing the Calendar app with the number 7 on it.

The site reported last week on a leak from a Chinese microblogging site, which suggested the new screen could push the price of the new iPad up by as much as $80.

On Monday, CNET reported that the very name of the new iPad will be different to reflect the new screen. Rather than being called iPad 3, the site said, it will be known as the iPad HD.

The story cited an unnamed developer who had "previously provided reliable information with respect to things Apple" for the new name, pointing out reports on Gizmodo and VentureBeat about new cases that were labelled "iPad HD (3)."

The next-generation iPad is also rumoured to have a faster processor and 4G long-term evolution (LTE) wireless connectivity. While the design is expected to closely resemble the look of the iPad 2, the latest incarnation may be a bit thicker and have more tapered edges.

But just because a new iPad is being unveiled, that doesn't appear to mean that the old one is headed for the recycling bin. TechCrunch.com reports that Apple will also unveil an 8GB iPad.

The site says if that's the case, the third iPad is not meant to be a replacement, but rather the company is "adding a high-res model to the still-successful iPad 2 product line."

Apple has scheduled a press conference for 1 p.m. ET Wednesday at San Francisco's Yerba Buena Center for the Arts.

What feature would you like to see in the new iPad? Let us know by leaving a comment below: