People with iPad 2 cases may want to start thinking about how they will cover their new iPad. David Carnoy writes on CNET that while Apple barely changed the device's design, there are some size differences that may need to be altered on covers and cases.

"Several companies, including Speck, Belkin and Incipio, make nice, slim, back-only covers, and they're all fairly similar," he said of some of the better cases on the market for the iPad 3. "My suggestion: get one that has a piece of metal on the back so the smart cover magnetically adheres to it when you have it folded back from the screen."

Some other suggestions he gave for iPad 3 cases include the Belkin Cinema Folio Stand, which he said costs $50 and allows users to prop up their iPad if they need to; the Belkin Smooth Bi-Fold Folio, retailing for about $30 and featuring a lightweight case with a "soft-to-the-touch" finish; and the Case-mate Venture, retailing for $60 and able to convert into a stand.

In a previous story, Carnoy said one company, Targus, is already shipping out new iPad accessories such as cases and covers. People looking to buy the new device should see what will work for their tablet.