Does the Raspberry Pi CM4 have ECC memory?

This doc, which seems official, indicates the CM4 has ECC memory. Is there any other indication the CM4 has ECC? It may not be supported yet by the firmware, but is the hardware there? Specifically this line:

Options for 1GB, 2GB, 4GB or 8GB LPDDR4-3200 SDRAM with ECC (see Appendix B)

If the official Docs state it, it’s probably true.

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