Google also posted a teaser video and teaser site which appear to confirm those rumors. Both show the border of a search field morphing into the shape of a smartphone.
Back in June we heard reports that Google was planning to launch its own smartphone by the end of the year to better compete with Apple and Samsung. Unlike the Nexus phones, Google would take more control over design, manufacturing and software.
Notably, the teaser site for the October 4th event is at https://madeby.google.com/.
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