The new Nexus 7 shipment batch coming off Google's warehouse this holiday season is likely preinstalled with the latest Android build, KitKat 4.4 that is, new reports said.

That the freshly Nexus 7 units Google is pushing our during the 2013 holiday quarter is KitKat-flavoured, according to Gotta Be Mobile, was revealed in the latest Bluetooth SIG certification involving the Asus 7-inch tablets with model number K008 and K009.

In particular, the K008 slate was shown by the document running an Android build KRT14B. Previously, the device flashed the JB prefix on the same indicator, which of course referred to the soon-to-be retired Jelly Bean.

So KRT would naturally point to KitKat, though according to GBM, the SIG listing was not specific about the details.

Still, the certification is the most solid clue coming from Google that KitKat is ready for unwrapping really soon. It's only a matter of time.

The best bet would be mid-November distribution or a few weeks after the anticipated Nexus 5 release date, which is thought to be the first bearer of the upcoming Android sweets.

The vanilla Android smartphone, which LG will reportedly produce, was originally set for a grand debut on Oct 24, which was then moved to Oct 28, but that date again fizzled out.

Now the rumours point to Nov 1, by which time the Nexus 5 is believed to go live on Google Play Store with the commercial availability to immediately follow.

And with the Nexus 5 release becoming more definite, the door is swung open for other Nexus products to hit the market in the final of the year. Foremost of the banner Google products is the KitKat-powered Nexus 7, which is en route for a fierce skirmish with the upgraded iPad Mini 2 from Apple.

Standing on iOS 7, the 7.9-inch tablet will boast of a high-resolution Retina display panel at 2048 x 1536, a faster processor and possibly a RAM bump up from last year's 512MB.

Google is also widely expected to uncloak the Asus-built Nexus 10 with the Nexus 5 this week. Having a 10-inch screen, the full-sized tablet is touted as the toughest rival of the 9.7-inch iPad Air, which Apple had subjected to a major tweak-job, leaving it thinner and lighter but with incredible power underneath its slim profile, thanks to an A7 chip that adheres to the 64-bit computing standard.