Nalle Hukkataival keeps tearing it up in the US. Currently, he is in Hueco Tanks, Texas, where he has made the first flash ascent of Crown of Aragorn in the East spur maze.
By doing this he joins the small club of boulderers who have flashed 8B or harder. Due to the subjectivity of grades, it's very difficult to say who are actually in that club.
Flashes of problems given 8B there have been quite a few, flashes of confirmed 8B's considerbly less...
To say Paul Robinson, Adam Ondra, Daniel Woods, James Pearson, Magnus Midtboe and, now, Nalle Hukkatival, have done it seems to be safe to say. Maybe also Keita Mogaki, who flashed La dance de balrog using the original method, and Tyler Landman.
Nalle has also managed to repeat Terre de Sienne, 8B, which he found harder than Esperanza, 8B+, commenting that the Crux is to force yourself to grab the razor blade crimp.
Source: 27 crags