MSI GeForce RTX 5080 leaked, confirms 10,572 Cuda Cores and 16GB GDDR7 256 bit bus memory.

https://videocardz.com/newz/msi-geforce-rtx-5080-gpu-has-been-leaked-16gb-gddr7-and-256-bit-confirmed

However no leaks when it comes to it's exact performance though. The GPU also has expected release date of January 21st 2025.