The 2018 Mission Concert will be staged on St Patrick's Day, March 17, with those driving the event confident the announcement will make a huge splash.
However, it is understood the date has no bearing on who the artist would be in terms of any Irish connections.
"The principal artist we have secured for our 2018 concert is an artist we have been trying to get to the Mission for many years," Sports and Entertainment (SEL) chairman James Erskine said. "We are looking forward to announcing the line-up."
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Mr Erskine said the opening acts and the main headline act would ensure "one very special day" at the Mission.