Yes, Delta First Class is automatically considered Sky Priority. When you book a First Class ticket, the "Sky Priority" logo will be clearly printed on your boarding pass (either digital or paper). This grants you the full suite of "red carpet" services: priority check-in (using the specialized lanes), priority security (where available), Zone 1 boarding, and priority baggage handling (indicated by a yellow "Priority" tag on your suitcase). While First Class does not always include Sky Club lounge access on domestic routes (unless you have a separate membership or a specific premium credit card), the ground-handling benefits are identical to those of top-tier Medallion members. For 2026 travelers, the Sky Priority status is a major part of the First Class value proposition, significantly reducing the "friction" of the airport experience by allowing you to bypass the longest lines at almost every touchpoint.