Normally this isn't the kind of thing that needs notice here, except in a few big name cases, but since JeffB said this SSR had different food from others because of the chef's skills, I suppose it means the menu is about to get a shake up, probably to be more in line with the others in the chain. From Metromix:
SushiSamba Rio executive chef Jason Paskewitz has resigned his position, just nine days after the eagerly awaited Japanese-Peruvian-Brazilian eatery opened for business. The restaurant has named Michael Schwartz as his replacement. Schwartz was previously the executive chef and co-owner of Nemo in Miami Beach, named by Esquire as one of the best new restaurants in America in 1995. He also cooked at Wolfgang Puck's Chinois in Los Angeles. Schwartz will take over the kitchen, working in tandem with sushi chef Takanori Wada.