Nintendo has just announced it plans to introduce a successor to its Wii console next year, a "playable model" of which will be shown off at the E3 gaming expo in Los Angeles coming up on June 7th. No details are available as to how the next Wii will improve on the first one, though we imagine Nintendo will be happy if it simply matches the success of its current-gen home entertainer -- the brief note publicizing the new roadmap also comes with a total of Wii sales accumulated between its launch in '06 and March 2011: 86.01 million. That's said to be on a "consolidated shipment basis," so maybe Nintendo is mixing its definitions of sales and shipments the way
