The information comes from the known Evan Blass or otherwise @evleaks and says Huawei prepares tablet on behalf of Google. The tablet will once again 7 inch screen, 4GB RAM and will be released before the end of the year.
He did not give any more information, but because it does not mention a Nexus tablet and since the rumour Google to leaves behind the brand, is likely to be talking about the Pixel tablet.
On 4 October the Google expected to make unveiled in the pixels and pixels XL smartphones, but it is not yet clear whether we will see and the tablet on the same day.
Google's Huawei-built 7-inch tablet, with 4GB RAM, on track for release before the end of the year.— Evan Blass (@evleaks) September 5, 2016