Since Nintendo first gave us the Mii's and Wii Sports, many ideas have circulated about expanding them. Then came Wii Sports Resort, which expanded the sports on offer and introduced us to Wuhu Island. The ideas since then imploded. Whether focused on one part of the island or the whole of it, there has always been an idea. Then we had Pilotwings Resort on the 3DS, which used Wuhu Island as its setting. The Wii Fit games use Wuhu as a basis for the jogging stages. Other games have kept the island alive, with two tracks in Mario Kart 7 and two stages in Super Smash Bros 4 WiiU. Of course, no full game set on the island has been announced yet, but maybe there's a reason for that.
Wii Sports came out in 2006. Nintendo recently released a reversion of it for WiiU in 2013. Wii Sports Club is different from its predecessor though, in the fact it has online multiplayer - though it hardly appears to get any use. And it is also different in the way the sports are delivered. Either a 24 hour pass for all the sports or buy them individually for quite a sum. Now Wii Sports Resort released in 2009, and while I'm not suggesting a date pattern, in a way, I also am. See, there is a massive list of games coming this year for WiiU. Splatoon, Mario Party 10, and Star Fox are just three games coming this year, and at E3 a game featuring Wuhu Island could be announced. It won't be released until 2016, roughly two and a half years after Wii Sports Club started rolling out [unless they are particularly generous], but it has to take Wii Sports Resort and do more than reversionise it.