The first 3 has 3 different appearances (3 upgradable tiers) and the last 4 has only 1 (appearance is fixed).
Weapons. I believe there are more weapons coming, 7 to be exact, we have their hashes however they’re unnamed and also unequipabble in-game.
These were all datamined. Ubisoft added them with the last tuesday update. DLC is releasing May 13th.