According To The August Issue Of Nintendo power there was an interview with retro studios where they reveal alot of info about metroid prime 3 corruption according to the interview Metroid Prime Corruption Will Have A New Visor Called The Command Visor. With It You Can Summon Your Ship To Help You On Your Quest. also, the weapon system has changed as well the system is similar to the original metroid and the gba titles. instead of switching between weapons they "stack" on top of one another. for example: get the wave and ice beam to combine them. there will also be new hunters in corruption as well all i know about them is that they speak english (yay). The sad thing though is that this will be the last metroid prime game. this is the one where samus destroys the source of the phazon once and for all. the interview with retro studios is found in the august issue of nintendo power. the one that says: we came wii conquered.
P.s: if this is old news, please dont flame me