All times Japanese time:
Sony posts their financial/shipments report today at 15:00, in two hours and thirty minutes. Later at 17:30 they have the conference with investors/analysts.
Nintendo hasn't posted a schedule, but they'll probably post their results when the stock market closes (around the same time Sony posts theirs).
News articles with the results will be up as soon as the reports are available.
My Mario Kart Wii friend code: 2707-1866-0957