From the announcement:
Four new ships have just been released for the Star Fleet range, and Klingon players are going to have a good day with the coming of the E5 Battle Corvette, F5W War Destroyer, and F6 Frignaut, a clutch of smaller ships that will terrorise much larger enemies!
To combat this, the Federation have launched the Star Tiger Light Raiding Dreadnought, a Fast ship that packs a great deal of firepower!