Nintendo will release Wii Fit Plus, recently trademarked in Japan, and a new Mario game later this year, both for the Wii, according to a report from Japan’s regularly reliable Nikkei newspaper.
https://lastchance.cc/nintendo-already-preparing-wii-fit-sequel-5271107%3C/a%3E%3C/p%3E
The Nikkei also makes mention of more accurate measurements in Wii Fit Plus, which could possibly come from the addition of Nintendo’s new and similarly named Wii MotionPlus controller accessory.
More vaguely, the Nikkei writes that Nintendo has plans to release a new Mario title by the end of the year. That might not come as a surprise, as Nintendo head honcho Satoru Iwata dropped word at last year’s E3 that the Mario and Zelda development teams were hard at work on new Wii games.
https://lastchance.cc/mario-zelda-teams-both-hard-at-work-on-wii-games-5025608%3C/a%3E%3C/p%3E
Nintendo Releasing New Wii Fit This Fall [Nikkei – subscription required]