The grapevine has been abuzz with rumors that Google is working on a 32GB variant of the Nexus 7 tablet; however, both Google and Asus are yet to confirm the same. A recent report reveals that a customer in Japan has received a Nexus 7 tablet with 32GB of internal storage.

The customer, who goes by the Twitter handle "@oppese", had placed an order for a 16GB version of the Nexus 7 tablet from the Google Play store; however, when the package arrived he discovered that it contained a 32GB version of the tablet instead.

@Oppese has posted a few photographs of the box and the Nexus 7 tablet on his Twitter account. One of the images shows the box, which says it contains a 16GB tablet, whereas the second photograph is of the Nexus 7 tablet with 27.58GB of usable storage space.

Even though Google is yet to officially corroborate the existence of such a device, the Nexus 7 has been in the news of late. The device had been showing up in retail inventory systems the past few days and speculations were rife that Google would be introducing the 32GB version soon. Additionally, a leaked screenshot from Carphone Warehouse had surfaced on the Internet, which also listed a 32GB version of the tablet, sending the rumor mill on an overdrive.

The Nexus 7 sports a 7-inch display with 1280 x 800 pixels resolution. A 1.2 GHzquad-core Tegra 3 processor, with 1GB of RAM, powers the tablet. The tablet comes with the latest Android 4.1 out of the box and weighs 11.99 ounces. The Nexus 7 also boasts a 4325mAh battery that supports up to 8 hours of active use. The tablet is priced at $199 and $249 for the 8GB and 16GB models, respectively.

The Nexus 7 tablet has climbed onto the popularity charts since its July release, with the 16GB version being sold out within a few weeks of hitting the shelves.

However, the tablet lacks a few features like an expandable memory option, cellular data, and a rear-facing camera, which are available in rivaling tablets. Moreover, Google only sells 8/16GB models, unlike the 32GB versions on offer by rivals like Amazon.

If the images published by @oppese are authentic, then it seems that Google accidentally shipped the device. It would also validate rumors that Google is on track to release a 32GB model in time for the holiday season