Just so you folks know; TP used TWW's engine. Zelda Wii most certainly will feature a new one.
As to what the game will be like, we simply do not know. TP flopped in Japan, so Nintendo might not make a sequel to it. A sequel to TWW/PH is possible. On the other hand, Aonuma said TWW's graphic style might be more suitable for handheld titles. Either way, expect something other than the typical Ganondorf-Triforce-Hyrule saga.
Also, Miyamoto said TP would be the last Zelda as we knew it, but what that means we do not know.
Personally, I expect the team to take what they learned in PH and make an excellent Wii title. No OoT-sequelitis this time, in other words.







