This is what we know.

Over the past three decades, two men have bickered across the aisle and either upthrust or dangled extremities to signify approval or disgust.  Encapsulating entire films into a simple gesture is the trademark of "Siskel and Ebert" and "Ebert and Roeper" and will be missed if it suddenly disappears from the show. 

In a statement released yesterday, Ebert reports that Disney, the producer, is moving in a new direction with the show and he will not be going along for the ride.  It really is the end of an era, but this did not come as a shock considering Ebert's health issues and not really being able to recreate the chemistry that was lost when Siskel passed away.  

As for the new program, who knows?  We'll have to hope for the best.

Source: Roger Ebert's Webpage