Darth Bane is a prominent figure in Star Wars history. He is known to be one of the first Sith Lords and lived a thousand years prior to the Clone Wars. He is most famous for implementing the ‘Rule of Two’ amongst the Sith, whereby there can only be one Sith master and apprentice at a time.
According to insider Daniel Richtman’s Patreon, Disney has plans for multiple projects involving Darth Bane, potentially including a solo project. It’s unknown if these projects would be theatrically-released movies or Disney+ series.
Darth Bane hasn’t appeared in any of the Star Wars feature films but has been the focus of many Star Wars novels and comics. He also made an appearance in season six of The Clone Wars. When Disney acquired Lucasfilm, the company made many of the stories that Darth Bane was a part of non-canon, but it looks like Disney may be preparing to set up its own canon story for the Sith Lord.