I'm still being bold as hell and saying Erdrick isn't happening.
He's been far too widely known for MONTHS almost a year now. This is Square we're talking about. They don't have leaks that lingering and big.
Everyone who has said Erdrick has also has taken a hit in credibility as well.
If Square wanted to add the biggest face of their famous RPG series. They sure as **** wouldn't let him leak out as early as he did. Nor would Nintendo let it happen. Nintendo leaks tend to be accidental ones that were through promo materials, etc, etc.