Im indifferent to more or less rumours as far as excitement goes.
I do like to be surprized though and I'd rather not know nearly the whole contents of the book before release but at the same time i do like hearing a few snippets.
Hearing rumours doesn't effect what i will buy whatsoever.
Im not the kind of person to buy an army just because it's the new kid on the block just because it might be good in game or looks cool.
I have the same three armies i did in 6th ed when i started. I buy what i like for them to build various list and not much more.