The gray plastic model largely matches the leaked renders we saw back in December right down to the giant camera island, hinge design and chunky bezels so if it’s a fake at least we get consistent fakes.
Dave hasn’t revealed his source, but size-accurate blanks like this are usually sent to the case manufacturer before the device launches so they have accessories ready to go. That timing aligns with the December leak, which suggested an official reveal at Google I/O in May, though later leaks suggested a fall launch.