As expected, Verizon has launched its MediaFLO-capable SCH-U620 slider from Samsung today, the first device to support its VCAST TV mobile television service (the arguably cooler LG VX9400 is still waiting in the wings). Besides the productivity-sapping teevee, the diminutive slider offers up Bluetooth, EV-DO (naturally), microSD expansion, 1.3 megapixel cam, and QVGA display.