The show followed Cosgrove's Carly Shay, as her internet show, iCarly, became a success. Trainor played Carly's brother, Spencer, while Kress starred as her best friend, Freddie.
The revival is described "as a new chapter for the most successful kids’ sitcom of all time," where Cosgrove, Kress and Trainor "join new friends for a look at these characters’ present-day lives, adventures and comedic mishaps," per Deadline.
Jennette McCurdy was also part of the original series as Carly's other friend, Sam. McCurdy, though, is not expected to return for the revival, as she shared earlier this month that she's quit acting and said that she's "ashamed" of her career and past roles.
It is also unclear if Noah Munck, who played Carly's friend, Gibby Gibson, will return.