Smaller than a starship but larger than a shuttlecraft, the Yellowstone is the newest Runabout in the Federation line.
The Yellowstone comes with an advanced Tetryon-Plasma Engine. This engine grants a +32 bonus to your Starship Warp Core Potential. The Tetryon-Plasma can also be ejected behind the Runabout. Any enemy ship that passes through the Tetryon-Plasma cloud will be slowed and may have its engines knocked offline. The Tetryon-Plasma Engine may be used on any small craft or fighter.
Like other Runabouts, the Yellowstone is often used as a tow vehicle. It comes equipped with a Tractor Beam to handle these utilitarian missions.
There are also a couple more in-universe preludes to new features episodes from the game, which you can find here, and here. Plus new wallpapers featuring the new Starfleet and Klingon flagships.