Bottom line: Pre-ordering of a Pixel 3 or Pixel 3 XL from Google will no longer get it to you on day one. It is probably worth waiting for a promotion if you are interested in purchasing a pre-order page will not get you a phone much faster anyway.
Although Google has just opened pre-orders for Pixel 3 and Pixel 3 XL yesterday, those who hope to get one soon may be exposed to a little delayed shipments. October 18th is the first day consumers can get their hands on a device, but according to Google's own store side at checkout, those who have not already ordered have to wait a few extra days.
Even when they pay for expedited shipping, the absolute earliest delivery from the Google Store is now only guaranteed by Tuesday, October 23rd. It seems that it does not matter what color is selected, or if the phone is purchased as unlocked, for Verizon or Project Fi.
Considering the $ 150 increase given to Pixel 3 over Pixel 2, raises the question that Google again faces supply and logistics issues that get the latest devices out on time or if many people just decided to bite the bullet and pay themselves. Given that Google does not offer any campaigns to U.S. customers at the moment and the lack of major hardware changes, it seems more likely earlier.
Assuming you can see past the giant hack and is willing to share roads by almost $ 1000 after Taxes, the larger variant can be sent one day later on 19. Depending on where you are located, Pixel 3 XL is expected to arrive at the same time for Pixel 3 just one day later.
One thing to note is that you purchase from Verizon and pick up a device in store should be possible on October 18th, but may result in receiving a device with a locked bootloader as well as unwanted Verizon apps preinstalled on the phone. If you do not know what it is, it will probably not be anything for you. For tinkerers and hobbyists who are interested in loading custom ROMs, buying unlocked is far the safer option, even if it means waiting a little longer.