There are plenty of rumours circulating about Google launching some new Nexus devices at its I/O conference later this week.

But we're not sure that even Google can manage to pull off a simulaunch of a new Android OS update (4.3), a bunch of new services (including some big news for gamers), AND a load of new devices.

One of the most likely announcements, however - especially given its age - will be an update to the existing Nexus 7 tablet. As it approaches its first birthday, the Nexus 7 is probably due a refresh.

The same, but different

According to industry chatter, the second-gen Nexus 7 will sport the same 7-inch display as the original, albeit with a far smaller bezel surrounding it.

We're also expecting the next-gen Nexus 7 tablet to pack a much-improved 1920x1200 display. The device itself will still be manufactured by Asus.

If the rumours are true, incidentally, Google will ditch the Tegra chipset in the original Nexus 7 in favour of Qualcomm's Snapdragon S4 Pro quad-core processor for its upcoming tablet.

Take a picture

And while the current Nexus 7 lacks a rear camera, we suspect the next Nexus 7 (mouthful!) will rock a 5-megapixel rear snapper. Oh, and the front-facing camera should be upgraded from VGA quality to HD. Taking photos with a tablet makes you look stupid, though. Fact.

We also reckon Google will offer Qi wireless charging support in its next-gen Nexus 7. That means you'll be able to just chuck it down on one of the many charging pads now on sale, and get on with your busy life.

Perhaps the most interesting rumour about the new Nexus 7, however, concerns its price. The Big G may well replace the current model with the new version and offer the Nexus 7 successor at the same entry-level price as the existing Nexus 7. Fingers are now being crossed.