Found a fix of sorts, not tried it as would prefer to wait for the full fix, at least it confirmed my Wifi card is recognised even if the driver is not loaded as seen by looking at my boot up messages which match the screenshot in the post.
https://www.reddit.com/r/opnsense/comments/1mebzlw/opnsense_25112257_how_to_enable_intel_iwlwifi_on/
https://www.reddit.com/r/opnsense/comments/1mebzlw/opnsense_25112257_how_to_enable_intel_iwlwifi_on/