Social media marketing in 2026 won’t look anything like it does today – and marketing and agency leaders know it. As algorithms shift faster, AI reshapes production workflows, and platforms battle for attention, marketers are being pushed to reinvent how they create, measure, and prove value. To uncover the most important social media marketing predictions 2026, we asked 10 agency leaders and marketers to share what they’re preparing for: which platforms are set to rise…