While there is some mystery surrounding the upcoming final season of Glee and what it might look like, co-creator Ryan Murphy has been revealing a few details that at least reveal who will be in the season.

Glee Returning To McKinley High For Final Season?

While some characters like Rachel (Lea Michele) are obviously going to return for the final season, the show's wealth of supporting characters could all come back in season 6.

One who is expecting to be back for the final season is Jane Lynch, who plays the now iconic Sue Sylvester. While her return is not "official" quite yet, the actress is pretty confident in her return.

Season 6 Debuts In 2015?

"They had me come to upfronts so I hope I'm coming back! If they bring you to upfronts, it's usually a good thing," Lynch told HollywoodLife.com recently. "It's going to be sad wrapping this up, and I guess I could start the mourning process now, but I don't want to think about it. It's sad - it's been the best thing that's ever happened to me."

Murphy has said that some supporting characters like Quinn (Diana Agron), Emma (Jayma Mays) and Coach Beiste (Dot-Marie Jones) would "absolutely" be back in the final season.

The season will pick up six months after the events of the Season 5 finale, which featured the show's main characters agreeing to meet back in New York in six months.

Glee Season 6 is expected to premiere in 2015 on Fox, though the network has not yet made an official premiere announcement.

In the mean time, watch highlights from the Season 5 finale here: