Galaxy S 4 availability hinted at in Staples document, pegged for April 26th on AT&T

Scrambling to find a launch date for the Samsung Galaxy S 4? Staples may have just dropped a hint. According to a leaked store training sheet, AT&T will be offering the next Galaxy phone on April 26th, followed by T-Mobile on May 1st and Verizon on the 30th. Bold lettering warns these dates are tentative but they are familiar, matching both the UK launch date and T-Mobile's own declarations. Naturally, we try to take these things with a grain of salt, though it's worth noting that the document a...