He's no longer on the outside, always looking in.

Series stars Eric McCormack and Sean Hayes posted a backstage pic of the Will & Grace cast posing with Tony award winner Ben Platt, who will appear on the October 5 episode of the revival. His role is unknown, but it looks like the sitcom will continue its streak of booking high profile guest stars like Britney Spears, Madonna, Ellen DeGeneres and Cher.

It has also been confirmed that Harry Connick Jr. will return to reprise his role as Leo, Grace's husband. Since it was teased that she was dating in the revival, and series co-creators Max Mutchnick and David Kohan said they were going to ignore the series finale where Grace and Leo get remarried, it seems likely that Leo and Grace are no longer together in the revival.

Platt's episode isn't scheduled to air until October, but the show is already back in production with the first episode filming in front of a live studio audience this week. Paolo Presta, who memorably was given a walk-on role on Will & Grace by Oprah Winfrey, was in the audience for the first night of filming.

The revival has already been renewed for a second season, and the upcoming ninth season will now consist of 16 episodes, plenty of time to squeeze in even more guest stars.

Will & Grace premieres September 28 on NBC.