Former Happy Endings writers David Guarascio and Moses Port have taken over as Community showrunners, following NBC's firing of creator Dan Harmon in May.
McHale has now assured fans of the comedy that he has been truly impressed by the script for the first episode.
"We read the first script [recently] and the script was great. We were all very curious to see what it would be like. It's really good, and so everyone was really happy," the Jeff Winger actor told PopcornBiz.
He continued: "I know David Guarascio and Moses Port. I did a pilot with them, and they're great guys, so I knew that they were funny and in that sense I wasn't worried about it. I knew that these guys could deliver, and a lot of the same writers came back.
"So in that sense I was confident with the writers, definitely, and then it just kind of came down to what the table read was going to be like. It went really well, and so that was really great."
McHale went on to thank Community's loyal fans for demanding the show stay on the air despite low ratings.
"I don't know what else I could say to the greatest fanbase in all of television history. I think after our hiatus last year, they're the reason why we're back," he said. "I can't speak enough about how amazing their support has been. When I tweeted the photo of the cover of the first episode - it's called 'History 101,' or that was the working title - I got retweeted like 500 times or something, so they still seem to be as vocal as they were.
"That's all we can ask for, and much like proselytizing, tell your friends about it. The fan support has always been there, and without them the show would not be on."
The recently-axed Harmon has predicted that NBC will cancel Community as soon as the show meets syndication requirements.
Community returns on October 19 on NBC.
Watch a clip from Community below: