Is a Fact, really a Fact?

The Wikipedia defines Fact as, 'something that actually exists, or something having objective reality that can be verified according to an established standard of evaluation.'
Wouldn't this mean that 'Facts' are ever changing 'Ideas', that evolve with information?
Is a Fact limited only by information?
If I read a book that is suposed to be based on facts, would new information, make the first book fiction?
What if I was the only person to evaluate the new version, would I have the right to claim it as more factual, as the first?