For better or worse, dual sliders are quickly becoming one of Nokia's trademark form factors -- but one thing we'd never really expected out of Espoo was a dual slider equipped with EV-DO Rev. A. Sure enough, FCC documentation has revealed a diminutive black dumbphone that packs CDMA800 / 1900 with 3G and slides two ways: one to reveal a numeric keypad, the other to offer up music controls. Historically, Nokia has "co-ODM'd" its CDMA devices with an unnamed Asian partner, and we suspect this de