RIM's next touchscreen BlackBerry, the Talladega slider, could be revealed as soon as April, based on comments from a Korean supplier. Woojeon & Handan is said by local news outlet Joins to be providing parts for a new phone, nicknamed "T," that would be ready next month. It would be a new flagship for RIM in Europe and the US, and it would go head-to-head against the iPhone, the publication said.