As of 20210602, users are now starting to receive these.
no release bits are available yet. Consider FreeBSD support as being alpha.
jrtc27's dev branch
I am able to boot the system to multi-user via a USB drive, with working Ethernet and NVMe. No SD card support is present (though you still need one with U-Boot on it) as that requires a driver for mmc-spi-slot, which itself requires an overhaul of FreeBSD's spibus to expose more low-level functionality required to control the SDC/MMC directly via SPI without an intervening controller.
I am working on this in the unmatched branch of my fork. This is a work-in-progress and will be subject to rebasing and force-pushing.
Full patch series pending review: