I was just about to post about this...
Yes there is a clear floating line in the 555 series coming out. I am just trying to figure out its best uses.I don't think it would be all that good for one who does a lot of mending as seeing the line in the water may be a problem.
But it would definitely kick arse for sight fishing.
Still undecided on if it will be better than any of the colored floaters though...