There have been some reports around the internet cropping up saying that the next installment of Apple's iPad will be coming in March. Apple has not confirmed this rumor yet, but if the rumors are true, then we'd be looking at the next iPad having a high-definition display, a quad-core processor, and running on the LTE network.
"The company’s manufacturing partners in Asia started ramping up production of the iPad 3 this month and plan to reach full volumes by February, said one of the people, who asked not to be named because the details aren’t public. The tablet will use a quad-core chip, an enhancement that lets users jump more quickly between applications, two of the people said.
Chief Executive Officer Tim Cook is counting on the new model to ward off mounting competition in a market that Apple pioneered two years ago. After its debut in 2010, the iPad emerged as the company’s second-biggest source of revenue — after the iPhone — and inspired rival products from Amazon.com Inc. (AMZN) and Samsung (005930) Electronics Co. Apple has sold more than 40 million iPads, generating at least $25.3 billion in sales." -Bloomberg
We'll have to wait a little bit longer to see if these rumors are true, but I don't think the wait will be too long, because if it was being released sometime in March, then we'll only have to wait about a month or two max to find out.