So what's the significance? Just this: Leko should get a little confidence boost from the win, and that could make him a tougher opponent for Anand tomorrow. And speaking of Anand, his game with Grischuk continues. It's move 50 in a rook ending that's probably winning for the Russian, but the route to success is not yet trivial. Here's the position with White to move:
White: Kf4, Rd3, p's a3, f2, g4, h4
Black: Kf6, Rb2, p's a4, f7, h6
More news as it happens.