The 26th SASUKE, titled SASUKE 2011 by TBS will be airing on January 2nd, 2011 on TBS, 9:00 to 11:39 PM, JST.
The TV magazines with the New Years schedules have just come out today so lots of information.
Aside from the airing date we now know that EXILE's NAOTO will be appearing. So will Daisuke Miyazki, Katsumi Yamada, a member of comedy duo サバンナ, a member of comedy duo モンスターエンジン, Yoshio Kojima and others.
We also have names of new obstacles for the 1st Stage: ステップスライダー (Step Slider) and ハザードスイング (Hazard Swing).
More information as it comes through.