Just reporting that I flashed x3 Extreme Networks AP3825i AP's using attended sysupgrade without issue. However, there is a report that new devices cannot be initially flashed using 24.10.0 as mentioned here.
I also flashed an Itus Shield firewall appliance (octeon) using attended sysupgrade. The upgrade worked without issue but I did notice a LUCi bug for DNSMasq as noted here which would affect all devices.
I also noticed the DNSMasq /tmp/dnsmasq.d folder changed to /tmp/dnsmasq.cfg01411c.d so it broke my blocklist scripts. A breaking change if you use that.
Thank you to everyone involved in this!