I finally found some Boys 8-15 Drynights in the new style soon Christmas Eve in Boots, so here's the photos of them, althought apologies for the quality as I took them with my phone in pretty bad light!
To me, they're alot more sturdy in their construction and also they seem to be slightly bigger although they have a slightly more snug fit at the sides due to the new blue material. The absorbent pad doesnt come as far up the back of the pullup as the photos show.
The designs are different too and they seem to be slightly more absorbent in the seat of the pull-up compared to the older style that Ive used on a regular basis in the past. I think they're the best yet personally!
£1 coin shown in the photos to represent scale