Just two days ago, T-Mobile's potty-mouthed CEO John Legere gave us a tentative May 1st launch date for Samsung's Galaxy S 4 on that network. And now, AT&T's making its S 4 plans public, opening up pre-orders for the device on April 16th. Subscribers that sign-up for a two-year plan will be able to snag the 5-inch 1080p GS 4 for $250. As to when it'll actually ship, well, that bit's still up in the air and we expect AT&T to elaborate in the weeks to come. But you can bet it won't be long before Samsung rushes to get its next big Galaxy thing into eager hands.