Many of the best dividend stocks in the market have impressive track records of growing their payouts over time. A select few have even gotten to the point at which investors can predict exactly when a company is most likely to announce their dividend increase for the year. For Aflac (NYSE: AFL), VF Corp. (NYSE: VFC), and Nike (NYSE: NKE), announcements are expected within the next month or so that should extend their streaks of dividend growth for another year.