Talk among Chinatown restaurateurs is that renowned Vietnamese chef Jimmy Kwok (Bodega Bistro, Begoni Bistro, etc.) has passed away. After being cut loose from a struggling Begoni Bistro, he relocated to Shanghai and opened a restaurant there, and reportedly suffered a recent fatal heart attack.
I have not found confirmation of this in the English media. Perhaps someone more competent than I in searching the Chinese media can check the story out.