Less than 24 hours after Google’s website published that an unlocked, unsubsidized Nexus One will be available with with AT&T 3G support, Google today made another announcement that Nexus One will soon be available on Sprint as well. Sprint has said that it will be announcing a release date and price "soon." And with that, the Nexus One will be available for all four major US carriers namely AT&T, Sprint, Verizon, and T-Mobile.

Here is the  press release:

Nexus One from Google Coming to Sprint; Availability Date Announced Soon
Nexus One is planned for the Sprint Mobile Broadband Network with twice the network coverage of AT&T and ten times the network coverage of T-Mobile, both by square miles; Expands Sprint’s Android portfolio
OVERLAND PARK, Kan., – March 17, 2010 – Nexus One, the first wireless phone sold through Google’s web store, is planned for Sprint’s 3G Mobile Broadband Network.  Sprint (NYSE:S) will announce pricing and an exact availability date soon. Nexus One will benefit from Sprint’s 3G network with twice the coverage of AT&T and 10 times the coverage of T-Mobile, both based on square miles.1
Sprint currently has America’s largest voice calling area of any carrier reaching more than 307 million people in the U.S., Puerto Rico and U.S. Virgin Islands with a Sprint phone and plan that includes roaming. PC World recently said no one has a more reliable network than Sprint in a 13 city 3G performance test.2 Customers can check the quality of network coverage with street level mapping at sprint.com/coverage.
“Nexus One is a powerful device that belongs on a powerful network. This is another step in our continued partnership of innovation with Google,” said Fared Adib, Sprint vice president of product development. “Sprint customers already have the option of two amazing Android devices with Samsung Moment™ and HTC Hero™. It is a natural fit for us to add Nexus One to the list of choices available for Sprint customers who want the best value in wireless with the best in Android.”
Google’s online consumer channel was created to provide an efficient way to connect online users with selected Android phones. Nexus One will not be available in any Sprint retail channels. It will be available directly from Google at google.com/phone. The online experience of Google’s web store is designed with a focus on simplicity allowing consumers to match a phone with the service plan that best meets their needs.

“While a pricing plan has not yet been determined for Nexus One, we are confident that it will be consistent with Sprint’s commitment to deliver more value than our competitors and keep pricing simple,” Adib said. “Right now, our Sprint Everything Data 450 plan with Any Mobile, Anytime(SM) gives customers unlimited calling with any mobile phone in America, unlimited text and unlimited Web for just $69.99 per month – the same price AT&T and Verizon charge for just unlimited talk. Our Everything Data plans include unlimited GPS Navigation at no extra charge and annual phone upgrades with Sprint Premier.”

• SIRIUS XM Radio on Android Smartphones: Coming in May
• First pictures of Google NexusOne Phone
• Google recommends HTC Incredible over NexusOne
• Google Nexus One: First to get Android 2.2 OTA update
• Sprint HTC EVO 4G is on sale from today