When does Buffy the Vampire Slayer return?

Buffy the Vampire Slayer is an American supernatural drama television series created by Joss Whedon. It premiered on March 10, 1997, on The WB and concluded on May 20, 2003, on UPN. The series follows Buffy Summers (played by Sarah Michelle Gellar), the latest in a succession of young women known as "Vampire Slayers" The show primarily takes place in the fictional setting of Sunnydale, a small Southern California city.
Buffy Summers (played by Sarah Michelle Gellar) is the "Slayer", one in a long line of young women chosen by fate to battle evil forces. This mystical calling grants her powers that dramatically increase physical strength, endurance, agility, accelerated healing, intuition, and a limited degree of precognition. She is known as a reluctant hero who wants to live a normal life. Buffy receives guidance from her Watcher, Rupert Giles (Anthony Stewart Head) and friends Willow Rosenberg (Alyson Hannigan) and Xander Harris (Nicholas Brendon)