The 2023 BMW M4 is being reviewed by various outlets, with some focusing on specific models such as the M4 CSL and the M4 Competition xDrive Convertible. There appears to be some confusion about the model year, as some outlets are reviewing the 2023 BMW M4, while others are reviewing the 2026 BMW M4. The car is being evaluated for its performance, pricing, and features, with some outlets providing photos and videos.