Google's announcement of the Daydream VR initiative being included in is one of the big talking points at this year's , and now we know that the is the first phone to be used as a development target for creating Daydream-ready VR apps.
According to , the Nexus 6P running the latest version of the Android N Developer Preview (3 or higher) is the place where developers will get started making apps with the Daydream SDK. At launch, the Nexus 6P is actually the only phone that developers can use as the "headset phone" in a Daydream setup.
With a 2560x1440 display, powerful processor and access to Google's latest builds of Android it isn't surprising that the Nexus 6P is a good device to start creating and testing new VR apps with, but confirmation is always a good thing. And while Google is already announcing that other manufacturers are working to have phones this year that are "Daydream ready," you can know now that the Nexus 6P will be there from the beginning.
For anyone who plans to get their Nexus 6P set up for Daydream VR development, note that Google says the Nexus 6P's thermal performance isn't representative of future Daydream ready devices:
"Caution: The 6P's thermal performance is not representative of the consumer Daydream-ready devices that will be launching later this year. In particular, expect the 6P to thermally throttle CPU and GPU performance after a short period of use, depending on workload."
The Daydream story is evolving quickly, and with all of the tools being released at Google I/O developers will be able to hit the ground running.

The Android N Developer Preview is just that — a developer preview. It is not intended for daily use. That doesn't mean it's not cool, and that you shouldn't poke around. But know that things will break. Tread carefully. (And have fun!)