If a rumour is proven to be true, it will be marked as TRUE, otherwise teh status will remain UNKNOWN or FALSE based on whatever evidence is found.
RUMOR: Tad Stones pitched a spin-off series starring Gosalyn Mallard [TRUE]
RUMOR: Launchpad was planned as the main character for TaleSpin [FALSE]
RUMOR: Four unseen episodes were in various stages of preproduction before the show was cancelled [FALSE]