Hello all. We’re not being cagey. We recommend against XMP memory due to compatibility issues. As far as ECC support, we can 100% confirm it is not something that will be available. The 7040u series CPUs that we’re offering are not the “Pro” series variants which are required for full ECC support, per AMD.
Avoid XMP and you should be fine with DDR5 SODIMMs with standard timings (DDR5-5600 recommended).
There is no conspiracy here.