Probably not in the exact form of that title. There is 'Solo: A Star Wars Story' which is an official production. But this title with 'old mill' in it seems like something made up or a misnomer.
The story of Star Wars: The Old Republic takes place thousands of years before the events of the movies. It features multiple factions vying for power and control. There are quests, alliances, and betrayals that shape the galaxy's fate.
In Solo: A Star Wars Story, Han is approximately 20 years old. It shows his younger days and the experiences that shaped him into the character we know from the original Star Wars films.
The length of the story in Star Wars: The Old Republic is quite substantial. If you focus solely on the main quests, it could take you around 40 to 50 hours. However, if you want to fully experience all the side missions and additional content, it could easily double or even triple that time.
In Solo: A Star Wars Story, Han is around 20 years old. This is a period of his life where he starts to build his reputation and gain experiences that shape his future.
One of the main storylines is about the struggle between the Sith Empire and the Galactic Republic. The Sith are always plotting to gain more power and territory, leading to many battles and political intrigues.
I'm not entirely sure as it seems like an ungrammatical or unclear title. It might be a very misnamed or misphrased reference to 'Solo: A Star Wars Story'. If it was supposed to be about that movie, it's about Han Solo's early adventures, his origin story, how he met Chewbacca, and his early encounters in the Star Wars universe.
Revan is a very important character. He was once a Jedi, but then turned to the dark side and became a powerful Sith Lord. His actions had a huge impact on the galaxy.