"Glee" Season 5, Episode 20, the season finale titled "The Untitled Rachel Berry Project," airs May 13 on FOX. Fans should get ready for Heather Morris, some bad news for Kurt, pressure-related issues, and an interpretation of John Legend's "All Of Me," courtesy of Blaine. The finale chapter, Season 6, is likely to premiere in 2015, according to a report.

Spoiler alert: This feature contains spoilers on Glee Season 5, Episode 20. Read at your own risk.

The engagement of Kurt (Chris Colfer) and Blaine (Darren Criss) kicked off the fifth season of Glee. (Follow this link for Blaine's proposal spiel.) Now, a Kurt and Blaine break-up in the Glee Season 5 finale is possible.

"[Glee Season 5 is] heading towards what's going to happen to [Kurt and Blaine]," Glee creator Ryan Murphy told TVLine.com, adding, "They pretty much have had trouble every episode." Murphy also said the "Sam and Mercedes relationship" will get more attention.

Brittany S. Pierce (Heather Morris) returns in Glee Season 5, Episode 20. The promo video shows the quirky character in bed with Blaine. Perhaps Brittany is one of the bad news between Kurt and Blaine. Shirley MacLaine also returns as June Dolloway.

Naya Rivera's Santana Lopez was written out of the Glee Season 5 finale, according to rumours. If this is true, it would be odd for fans to see only half of the Brittana ship in a very special episode.

Rachel Berry (Lea Michele), who is in the title of Glee Season 5, Episode 20, is expected to be the focal character of the episode. However, the couples' stories will be moving forward into some (possibly very big) changes.

Listen to Darren Criss' cover of John Legend's "All Of Me" here or play the clip below.

WATCH: 'Glee' Season 5, Episode 20 ('The Untitled Rachel Berry Project') | FOX on YouTube

LISTEN: 'All Of Me' by Blaine in 'Glee' Season 5 Finale

According to a Hypable report, Glee Season 6 "will not premiere until early 2015." If the Glee Season 5 finale has one or more cliffhangers, the gleeks will have to be extra patient.

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