"Bonus Redeem Software" A New Wii Feature?

Eagle eyes at the Nintendo Everything blog noticed a new "features" area within the Wii Shop channel in Japan that looks like it'll let you enter codes for free Wii Shop software goodies. After getting some translation help with Japanese Wii Shop manuals, Nintendo Everything learned that certain retail titles will somehow offer these codes.

Will certain games have codes along with them for extra DLC? Or will they offer vouchers for, say, Virtual Console titles? That could be cool - for example, buy Mario Galaxy, get a freebie code for the original Super Mario Bros. on VC, something of the sort?

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