This is according to wiiware.nintendolife.

Gradius Rebirth 1.5



Konami's retro Gradius title gets an upgrade.


Konami has just released an update to their Gradius Rebirth WiiWare release that tosses in a few new twists to the package.


Among the new additions are some graphical improvements, remixed soundtrack tunes, and a few other goodies worth checking out for those who own the game already.


All you have to do is head to the Wii Shop Channel and download the free updated version of the game. Then get ready for some retro Gradius shooting action.
I still wanna see Lifefore rebrith gosh dangit.