I too love to see the formal family portrait, as we can appreciate the jewels much better than from the other pictures. Luckily they published it in a decent size and high resolution.
Wasn't this the first time that they published a gala picture with the complete younger generation present? There have been numerous family portraits before, but none of them in full gala, iirc. Let's hope that they keep it up and have similar portraits from time to time.
It is unusual that all the children with spouses attend the gala evening at National day. Although they often all attend the daytime events, some of them have always been missing in the evening. So maybe they all went this year because of the plans for a formal family portrait?