It might be true that Nintendo are just re-releasing a game, it's true that we've all paid for it before Metroid Prime was probably my favourite Gamecube game - ever.
When Metroid Prime 3 came to Wii it completely reinvented the controls, the Wiimote and Nunchuck, in my opinion, were perfect. It makes perfect sense for Nintendo to update both previous Prime's and get them all polished up for Wii, I'm sure I'm not alone in wanted to snap them up pronto.
The game is set for release in Japan in a couple of weeks and therefore trailers have started to appear online, you can one watch here:
Mmm... I can't wait to play this classic with t'wiimote!