White sword could mean good and black could mean evil, Kusanagi Sword come fron Yamata no Orochi so it black, Golden sword come from V-chan (a god) so it white.
What i'm trying to say, the White sword might not imply a new weopon but reference to the Golden sword as a weapon of a god.
another thing.
__________________
Sorry, Image unavailable. Only awesome people can see it.
“Whatever your reasons may have been, you did what you did. Do not forget that the day will come when you must pay for it.”