The earliest rumors of the Nexus 6, reported way back in July by Android Police, were pretty spot on. Google and Motorola (check) were building a 5.9-inch phablet (check), codenamed Shamu (check), to be released in November (check). It would target US carriers (yep), run Android L (uh huh), and have a fingerprint sensor (wait what?).
That last one didn't work out—the Nexus 6 never shipped with a fingerprint sensor. That doesn't really make the report wrong, though. Back when it was written, the Nexus 6 and Lollipop used to have a whole setup for reading fingerprints. The truth out there, you just have to find the needle in the haystack that is the Android Open Source Project.