Rumor has it, Adele fans are about to be thrilled. The “Rumour Has It” and “To Be Loved” singer, 33, will be dropping a new two-hour concert special on NBC later this month, the network announced Thursday. “An Audience With Adele,” hitting the network at 9 p.m. ET on March 20 and streaming the following day on Peacock, sees the 15-time Grammy winner engage the audience in “an unforgettable night of music” at the London Palladium, marking her first hometown concert in five years, according to NBC. The televised event will also see fellow celebrities asking Adele intimate questions and includes …