Following the destruction of the USS Belfast, Captain Shon and many of the other surviving crew members of that ship were reassigned to the newly launched starship Enterprise.
The 1061 meters long Odyssey-class was the pinnacle of Federation starship design and would carry the Federation into a new generation of exploration in the 25th century. It was designed to be a dreadnought and an explorer. It is one of the largest starships created by Starfleet, surpassing even the Galaxy-class in size.
The Odyssey-class featured the ability for saucer separation much like the Galaxy-class. The chevron-shaped saucer section could be separated from the stardrive section, allowing greater maneuverability to the stardrive section. The chevron section can be reattached to the stardrive section at any time. In addition, an Aquarius-class escort ship is docked to the rear of the ship's stardrive, which can be deployed at will.
There were also two other variants, as well as a prototypical design class developed after the Odyssey & Verity prototypes. After over 30 years of more development, the Odyssey Class was finally mass produced. It has a timeline similar to the Ambassador Class, but the initial design managed to make a comeback with the Odyssey. Funny enough, STO saw the Ambassador's initial design make a modded comeback as well, serving as a versa-cruiser. :3
No, it was seen in Star Trek Online as Starfleets newest Flagship and the Odyssey class was also seen in the Countdown Comic for Star Trek Picard, as the USS Verity, the ship Picard commands as an Admiral.