Latest news is that the Main Street Electrical Parade is ending at WDW on October 9th and then moving to Disneyland to replace Paint the Night. Paint the Night is running over the holiday and then being replaced in early 2017. That timing could lineup for Paint the Night to move to Disneyland Paris for April's start of the anniversary year. Haven't heard anything about WDW getting a new parade, so maybe they'll just go without one for a year or two and then receive PTN after the DLP anniversary celebration is over.
Schedule lines up nicely but if it was happening I'm sure we would have heard some rumblings or rumours and we've heard nothing so far, stuff like this usually isn't sprung on us right?
I just can't see them letting Magic Kingdom go without nighttime entertainment, its their main, flagship park and even with the new stuff at AK I just don't think they'll go without it at their biggest, moneymaking resort, honestly though IMO it shouldn't be the case that they need to swap parades around, each resort should have their own and then swap them so nobody goes without.