Of course it's a rumour, even if it's true it's still a rumour.
rumour US, rumor [ˈruːmə]
n 1. a. information, often a mixture of truth and untruth, passed around verbally
b. (in combination) a rumour-monger
2. gossip or hearsay
3. Archaic din or clamour
4. Obsolete fame or reputation
vb...