All the major US carriers today announced that the much-awaited Samsung Galaxy S III would start shipping on June 21st. Though all the carriers are offering similar pricing for the new handset there are some small differences. So, here is the Galaxy S III’s pricing and availability for various carriers in US:

AT&T: Preorders start on June 6th with shipping date of June 21st. AT&T will only sell the 16GB model for $199.99 with two year contract. However, AT&T will offer three not two color options including Marble White, Pebble Blue and exclusive red color that will come later this summer.

Sprint: Preorders on Sprint will start a day early on June 5th, but the new handset will ship on the same date June 21st as other carriers. Sprint will offer two models in two colors – 16GB model for $199.99 and 32GB model for $249.99 – in Marble White and Pebble Blue.

T-mobile: Samsung Galaxy S III will ship on T-mobile starting June 21st, but the carrier isn’t taking preorders. Also T-Mobile hasn’t announced pricing yet and offers a sign up page for more information.

U.S. Cellular: The carriers will starting taking preorders of Galaxy S III on June 12th and will announce the pricing on the same date. U.S Cellular will ship the new phone sometime in July and will offer both 16GB and 32GB models.

Verizon: Preorders for Galaxy S III start on Verizon on June 6th at 7am ET and the handset will ship on June 21st. Verizon will offer both 16GB and 32GB models in Marble White and Pebble Blue colors, priced $199.99 and $249.99 respectively.