Just like we said last night, June 20th will see the U.S. retail release of the Motorola i1. It will be available from Boost Mobile retailers as well as from both Best Buy and Best Buy Mobile. Pricing was not disclosed (we imagine it to be around $350), but we did get confirmation that you’ll be able to hook up the world’s first Push-to-Talk Android smartphone to Boost’s $50 unlimited voice and data plan.