Does the Blade 16 (2025) have PCIe 5.0x4 M.2?

Hello!

I'm looking to add a 4TB SSD PCIe 5.0x4 M.2 to my new Blade. Question is if the system is set up for the Gen 5 or if it's still Gen 4. If it's Gen 4 then I don't want to use a Gen 5 that will be throttled down. 
 

Thanks!!