The new ships are available for Federation and Klingon players, as well as allies in Romulan and Dominion factions. They will also be available in both a Fleet and Non-Fleet variant. The new Tier-6 ships, the Klingon Bath and the Federation Somerville are also outfitted already with the new Mycelial Spore consoles and have the Spore-Infused Anomaly traits.
You can check out the full stats and specifics on the ships on the official STO website. Right now through September 30th, players can get these ships for 2400 ZEN each or in a bundle that includes both ships, a Fleet Ship module, as well as 5 Master Keys for 4000 ZEN. After the sale each ship will cost 3000 ZEN while the bundle will be listed at 5000 ZEN.