What happened: The Buffalo Bills' new Highmark Stadium is officially open, marking the completion of the franchise's long-planned home venue. The team framed the milestone as a historic day for the organization and its fan base.

Why it matters: The opening closes the book on the Bills' previous home and gives the franchise a modern facility heading into the 2026 season. A new stadium reshapes the gameday experience, the team's revenue base, and its long-term footprint in western New York. The move also drew fan reaction over ticket affordability at the new venue.

What to watch: Attention turns to the Bills' first slate of events and home games at the new building as the 2026 season approaches.