Pretty soon, in fact, although I'm having a difficult time discerning exactly when. At first I thought it was going to start right about now (9 a.m. ET), but then another source indicated that the drawing of lots - presumably for the Norwegian Championship - was what would start now and the match would begin two hours later.
Back to the intro: Magnus Carlsen and Borki Predojevic will play a four-game rapid match to help draw attention to the Norwegian Championship. (Attention from the Norwegian media, one presumes.) Their match will have two games today and two games tomorrow, and the Championship starts tomorrow.
Unless Carlsen is in a merciful mood, it should be like the proverbial hot knife going through butter. It should be an entertaining show, and a nice supplement to the ongoing rapid event in Geneva (Kramnik, Nakamura, Mamedyarov, Bacrot, Polgar, Edouard, Pelletier and Kosteniuk).