Citing a "trusted source," TechnoBuffalo said the search giant will show off the device at its conference, scheduled to begin June 27, CNET.com reported Friday.
The rumored 7-inch tablet, reported to have been developed with help from computer maker Asus, based in Taiwan, will come with Nvidia's quad-core Tegra 3 processor chip, TechnoBuffalo said.
It is not known what operating system the device will run, although Android 5.0 Jelly Bean has been rumored.
There have been rumors for months Google is planning to launch a tablet, but the search giant has kept silent on the matter.
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