Maybe. What are the fare buckets availability like? That is a true view of booking metrics. Looking at seat maps may be a crap shoot as not everyone ticket has a seat selected (before some says something about Delta will auto-pick a seat for you, not everyone books through Delta sales channels).

Revenue management may not have tinkered with fare buckets this far out. Usually people booking far out have inflexible schedule, Delta and other carriers know this, and purposely leave fares untouched.