I'm just stating here for the record that I suspect that this reported "new" monorail is really just the Tronorail without the Tron wrap. I am pretty sure that the Tronorail was the peach or coral monorail + the wrap already (caught a glimpse of the underneath when I was there in March - you can kind of see the stripe on the edge of the door when the door opens). Since the Tronorail is leaving, I think they're just unwrapping it and probably cleaning it up a little bit. But I don't think it's a brand-spanking new train.
I'll be curious to find out if I'm right! Everyone else seems to think this is a brand new train coming . . .