The Galaxy S IV is expected to be unveiled in just a few hours in what may be one of the biggest smartphone launches of all time. We have already seen Samsung’s (005930) latest flagship smartphone in front of the camera and in a variety of leaked images, and new rumors continue to shed light on one of the most highly anticipated devices of the year. According to a report from The Wall Street Journal, Samsung will utilize SwiftKey’s predictive input technology for the Galaxy S IV’s virtual keyboard. The technology has previously been licensed by BlackBerry (BBRY) for its BlackBerry 10 platform, which has been praised for its efficient input method, and the keyboard is consistently one of the best-selling apps in Google Play store. Samsung will announce the Galaxy S IV at a press conference tonight at Radio City Music Hall in New York City and BGR’s live coverage will begin just before 7:00 p.m. EDT.