Every year, Hatsumi-sensei chooses a theme around which to focus his teaching for the year.
For 2008, the theme has been announced as: Togakure Ryu Ninpo Taijutsu and Ninja Biken.
Here's my source.
Two caveats here... First, Don't count this as official until Hatsumi actually starts teaching this in Japan. Second, my theme for this year will continue to be Kihon, or Basics.