I just had a thought. What if this opening shows Misty and the others like the second DP opening?
Oh god, we'd have to sit through a year of people speculating cameos that will never happen again.
Considerin the Openings are suppposed to be indicators of what we're in for. Problem is, they make the openings before they've written much, let alone planned anything...
Not really. The openings always show scenes of things that never happened in the anime. The last DP opening had Ash's Sinnoh team battling a Lucario, Entei, etc. that never happened. The Orange Island opening showed an Ash Vs. Richie rematch that never happened.
Misty has actually been in the openings since Battle Frontier, yet she never appears in any of the episodes. I guess like Tracey, they just include her in them because she's part of the shows history, even if she never appears in any of the actual episodes.