Was there any indication that they were discontinuing Lincoln? Has there been a reason given?
It seems it was announced before in Japan in a report on the decisions made in a "reform meeting" where some shows were cancelled and others changed timeslots.
The reason seems to be the viewership ratings. Some blogs mention it was popular when the show began but that the airing of the Lincoln Special in April got 7.0%. Then after that it declined further from 6.0% to 5.5% and then 4.1%.
It will be replaced with another Downtown-hosted show though with a more educational angle called 100 Seconds Dr. Academy (Hyakubyo Hakase Academy). Researchers get 100 seconds to prove if their theory will be useful to society in hopes of getting a grant. Downtown act as judges casting doubts on their theories to discern its usefulness.
It sounds a bit like Dragon's Den (Shark Tank in the US) which I stopped watching ages ago though.... And apparently those shows were based on a Japanese TV show called "マネーの虎" (Tiger of Money) that ended in 2004. But the 100 seconds time limit should stop it from getting boring and Downtown as the hosts will no doubt be good at making disparaging and funny comments on the fly regarding their theories.
I'm guessing it'll mostly be talking though... so without subs it might be a little dull for those of us who can't understand Japanese
But I wish Downtown great success with it anyway.