In a tweet posted just earlier today, Verizon's CMO Diego Scotti confirmed that Google's upcoming Pixel devices, to be announced today, are going to be exclusive to Verizon, just as they were last year. So if you were hoping to pick up either phone from another carrier, you're probably out of luck.
— Diego Scotti (@diegoscotti) October 4, 2017
There's no word on the details for exclusivity quite yet, it could just be a timed exclusive. But given that the last Pixel was exclusive to Verizon for the life of the device, it wouldn't be surprising to see that continue with the Pixel 2 devices.
Verizon has posted the news on its site, and you can pre-order the phones today (Pixel 2, Pixel 2 XL). The Pixel 2 from Verizon will be delivered by 10/19 and the Pixel 2 XL should be there by 10/25. Pricing is the same as the Google Store.