Remember that special announcement the UFC recently teased ahead of a mysterious Nov. 17 event in Las Vegas? The fight promotion today unveiled the details.

The star-studded event will include the organization’s top fighters as the 2015 event calendar is unveiled. Additionally, officials will “make a very special announcement” at the event, according to today’s press release.

According to the UFC, the Nov. 17 gathering, which is free and open to the public, will feature “the largest compilation of champions, contenders and main event headliners on the same stage.”

The event takes place at The Smith Center for the Performing Arts (5 p.m. ET/2 p.m. PT) and will stream live on MMAjunkie.

The UFC, which has never before unveiled a full calendar schedule at one time, has already confirmed a number of star-studded shows for late 2014/early 2015.

They include:

UFC Fight Night 58

Saturday, Dec. 20 at Ginasio Jose Correa in Barueri in Sao Paulo

– Lyoto Machida vs. C.B. Dollaway

UFC 182: Jones vs. Cormier

Saturday, Jan. 3 at MGM Grand Garden Arena in Las Vegas

– Light heavyweight champion Jon Jones vs. Daniel Cormier

UFC Fight Night 59: McGregor vs. Siver

Sunday, Jan. 18 at TD Garden in Boston

– Conor McGregor vs. Dennis Siver

UFC 183: Silva vs. Diaz

Saturday, Jan. 31 at MGM Grand in Las Vegas

– Anderson Silva vs. Nick Diaz

UFC 184: Weidman vs. Belfort

Saturday, Feb. 28 at Staples Center in Los Angeles, Calif.

– Middleweight champ Chris Weidman vs. Vitor Belfort

– Women’s bantamweight champ Ronda Rousey vs. Cat Zingano

For more on the UFC’s upcoming schedule, check out the UFC Rumors section of the site.