According to Siliconera, Japan will receive the New Play Control versions of Metroid Prime 2: Echoes and Chibi-Robo! on June 11. No details have been revealed about how the games will be reconfigured for Wii controls, though it's probably a safe bet that Metroid Prime 2 will play similarly to Metroid Prime 3. As for the adorable-housekeeping-robot sim, Chibi-Robo!, it's anyone's guess.
For now, the release date for countries outside Japan remains a mystery, so those who haven't played the Gamecube originals can start holding their breath ... now.