Ever since, fans have been getting pretty worked up about the show, which is due to begin filming in the summer ahead of a Christmas release on BBC One.
Now Corden - who nowadays spends most of his time hosting a chat show in the US - has revealed why they decided to revisit Gavin & Stacey.
James Corden says the Gavin & Stacey Christmas special will be a 'nostalgic joy-bomb'. Credit: BBC/Baby Cow Productions
Speaking to The Times, he said: "We owed it to the characters. Let's see what they're doing.
"We wanted to see if there was something there. Once there was, my feeling was, life's too short.
"Fear is the absolute reason to do it. This sounds ridiculously deep but none of us are promised tomorrow. We're here for a minute, you have to try to do it all."
Asked whether the script would touch on the current climate and issues such as Brexit, Corden said: "We did talk about it, but we just want the new show to be a nostalgic joy-bomb."
The 40-year-old also said that his relationship with Mathew Horne (Gavin) has 'always been great', but insisted he would never reveal what actually happened on the show's mysterious shipping trip.
When the sitcom last aired on New Year's Day in 2010, it garnered an audience of 10.2 million people, and it seems that both fans and the cast are excited by the prospect of the show's rebirth.
Corden revealed the exciting news on Twitter by sharing a picture of the script, and shortly after other cast members started spreading the word:
In a BBC press release about the special, Corden and Ruth Jones - who he co-wrote the script with - are quoted as saying: "Over the last ten years we've talked a lot about Gavin and Stacey - where they might be today and what their lives might look like.
"And so in secret we took the plunge and wrote this one hour special. We've loved revisiting Barry and Essex again and bringing the characters back together has been a joy.
"We're so excited to get the chance to work with our fabulous cast and crew once more and to give fans of the show a festive treat this Christmas. Thank you BBC for helping to make this happen."
Here's hoping it lives up to the hype.
Featured Image Credit: BBC/Baby Cow Productions