Here are some descriptions of the upcoming episodes. WARNING! If you don't want any spoilers, stop reading!
May 4
GLEE – “Bad Reputation”
When a salacious list about members of the glee club circulates the halls of McKinley High, Mr. Schuester (Matthew Morrison) begins an investigation. Meanwhile, Sue (Jane Lynch) is mortified when a video of her rendition of Olivia Newton-John’s classic “Physical” is unearthed. Special guest stars include Olivia Newton-John, Molly Shannon and Jonathan Groff.
May 11
GLEE – “Laryngitis”
Rachel (Lea Michele) panics when a sore throat affects her singing; Kurt (Chris Colfer) tries to change his persona to impress his father (guest star Mike O’Malley); and Puck (Mark Salling) makes a strategic move to elevate his social status.
May 18
GLEE – “Dream On”
In an episode directed by Emmy Award winner Joss Whedon (“Buffy The Vampire Slayer,” “Dollhouse”), Mr. Schuester’s former high school nemesis (guest star Neil Patrick Harris) causes trouble for the glee club. Rachel struggles with a life-long personal issue, and Artie’s (Kevin McHale) dreams take him on an adventure. Additional guest stars include Molly Shannon, Idina Menzel and Jonathan Groff.
May 25 GLEE – “Funk”
Mr. Schuester thinks he’s scored the upper hand over Sue, but learns hell hath no fury like a woman scorned. Quinn (Dianna Agron) connects with her “funky” side.
The date is only for the USA and I'm not sure when it is gonna come out here.