The imminent release of the iPad 3 has stirred quite a few waves recently, and now the Apple crew in Cupertino, California seems to be testing out the new-generation device with Retina Display and rumoured iOS 6.

In preparing a browser stat report, Ars Technica went through its server logs and found a total of 346 visits from a device using the rare screen resolution of 2048 x 1566 pixels. Coincidentally, this is the same resolution the iPad 3 is expected to have - double the resolution of the current iPad, and with four times as many pixels.

The screen resolution in itself is not enough evidence of a device, but the identified devices have been tracked down to Cupertino, California, where Apple’s corporate headquarters are located. Many recent rumors have indicated that the iPad 3 will boast a Retina Display with a double screen resolution of 2048 x 1536 pixels, which is very rare.

According to Ars Technica, these tablets are running the newer 535.8 version of WebKit instead of the known versions of iOS 5 - including the current release iOS 5.0.1 and the new iOS 5.1, expected to be released during Apple’s event on Wednesday.

Moreover, the tech site also tracked iPads accessing the site from Apple’s corporate IP block at its Cupertino corporate campus. Reportedly, some of those iPads were running iOS 6, a rumored upgrade to Apple’s mobile operating system.

While there is no evidence that Apple plans to release a new version of iOS along with the iPad 3, these server logs do indicate that Apple is working on a new upgrade. For now, the company is yet to release the iOS 5.1, which has been in developers’ hands for months and is still in beta.

The highly anticipated iPad 3 with high-resolution Retina Display will be released on March 7 in San Francisco, and considering Apple’s previous launch schedules, the iOS 6 could be released later this year with the iPhone 5.