Even if just Nintendo supports Wii after Wii 2/HD/Plus/Zii/whatever hits, going by their previous "market leading" platform track records bodes well. Their final NES game came over 4 years after SNES launch. Their final SNES game over 4 years after N64 launch. Their final GB game over 2 years after GBA launch. Their final GBA game over 3 years after DS launch.