If you have more details or a specific aspect of the "tdu platinum update" you're interested in (like release date, platform, new features), providing that information could help in giving a more accurate and helpful response.
The biggest complaint about Solar Crown was that it looked last-gen. The Platinum Update is rumored to unlock a "High-Fidelity Mode" for PS5 Pro, Xbox Series X, and high-end PC. tdu platinum update