I don't think it's been either debunked or confirmed yet.the rumor was new trains, not track. Possibly from Bombardier (spell)?
However, recent rehabilitation work on the existing trains makes it seem a little less likely. I think we can say with some level of assurance that unless Disney has gotten a lot better at keeping a big secret, we're not going to see new monorail trains for the 50th anniversary.I don't think it's been either debunked or confirmed yet.