All three Metroid Prime games rolled up into Metroid Prime Trilogy for Wii

If you were jealous of Japan's New Play Control releases of Metroid Prime and Metroid Prime 2: Echoes, don't be. Nintendo of America just announced plans to release all three (non-pinball) Metroid Prime games on a single Wii disc as Metroid Prime Trilogy. The press release says that it was developed by "Retro Studios and Nintendo." Did Retro itself work on the refit before leaving Nintendo, or does the Retro credit apply only to the original games?

Metroid Prime 1 and 2 will be enhanced with a widescreen mode and the pointer-based Wii controls from the Japanese re-releases. Metroid Prime 3 won't be, because it was already a Wii game and already has them. The collection will feature a "new unlockables system" that allows access to bonus artwork and other rewards based on accomplishments in all three games — Corruption's "token" system applied to the whole series.

Trilogy will be out in North America on August 24 for $50.