Some info from the preview in the new(May 2009) GameInformer:
"While the main focus of the game is on retelling the events encapsulated by Resident Evil 2 and Resident Evil: CODE Veronica, you'll also play through brand new shenanigans staring Leon Kennedy in South America, adding yet another twist to the legendary RE narrative."
Also they have "online TBA" in the header of the article.
thanks to cal_cal from IGN boards