So, based on the newsletter and website information I gathered, here's some responses to questions/concerns y'all raised.
The Australian box represents BOTH the Royal Australians and the Free Australians; the Free Australians have ties to the CoA and so get energy weapons and their own drop-ons, while the Royal Australians get British advanced gunnery and shield technology. Both sides get the Crocodile Attack Ship tokens, which I presume are launched from the two support vessels (with some contraption on the backside). The Australians also have pocket battleships (pictured).
The Chinese Dreadnought is not pictured here - it's a giant, floating pagoda-thing, even larger than the two in the Naval Support box. The Chinese have some energy-shield that is projected from floating fortress to floating fortress (including the Dreadnought), protecting anything within its bounds, I guess. The Chinese have support cruisers that are light carriers (pictured); the two-turreted Chinese vessel in the Naval Support box is a battlecruiser; the smaller vessels in the Naval Support box are destroyers.
Also coming soon for all factions I guess are the re-packaged Naval force boxes and Naval Support boxes. KoB and RoF are first. RC get a tank destroyer on land, FSA get some ground robot tokens, as do the CoA (Colossus Iron Men).
Big news, huh?