That's significant because the Nexus 6 is the only device that currently works with Project Fi, a service that looks to route its phone calls over WiFi first before turning to either Sprint or T-Mobile cellular networks.
Until June 23, you'll be able to buy the 32 GB model unlocked for $499 and the larger 64 GB model for $549, the company says. Although folks who don't get their official invites to Fi until after that date will likely miss out on the deal, a customer rep for Project Fi says the promotion is being offered to bring Google's prices in line with those found at other carriers.
If you purchased a Nexus 6 from Google between May 15 and June 1, Google will credit $150 to your Project Fi account instead — which you can then apply toward your phone and data plan. Users are receiving emails notifying them of the credit:
Google has said that it is backed up with requests for invites until at least midsummer.