Just found this on the wiki NEW CANNONS

[Midhav]

WitchdoctorDan, if you look at Speedway Master's post on the Complete list of weapon names, he also provided a list of weapon classes. Carronades was one of them.

These models have been around for a long while and in-fact were found on POF before the wiki posted it. But this doesn't mean that these are the only cannons that are coming. They probably will start making models on other cannons soon, meaning that we might get those bloody awesome Tsar Cannons and Dardanelles' Guns.