Sprint pre-order page for the Galaxy Nexus with Android ICS 4.0.3 is now live. You can pre-order your Galaxy Nexus for $199.99 with a 2-year contract. Furthermore, although it is not necessarily coming in the form of an official press release, the page also clearly mentions the following:

"We will charge your card for your phone today. Shipping: We'll do our best to get it to you before Sunday, April 22."

Also, we got the official confirmation about that April 22nd release date from Samsung, So you will get your Galaxy Nexus before that date.

Sprint's Pre-Order Page