Nike is making a surprise comeback at the Super Bowl — and JPMorgan analysts broke the news

1. Nike returns to Super Bowl advertising after 27 years. 2. New CEO aims to reverse recent sales slump with bold marketing. 3. Nike's revenue dropped 8%, shares down 30% in last year. 4. The marketing overhaul focuses on cultural moments and iconic products. 5. JPMorgan analysts noted excitement around new marketing strategies.