According to this tweet from Luka, 2CELLOS have added another date in Japan for 2 July 2015 and it will be a classical concert only at Sontory Hall in Tokyo!!! Looking at one of the other tweets, tickets may already be sold out.
Update: 12 Mar 2015 In various interviews, more details are emerging about this concert. In on last week, Luka said that there will be an orchestra for this concert and that it will be filmed and posted to YouTube so the fans can enjoy it.
Today, in an interview with the Seattle Times, interviewer revealed these hints at what may be on the set list: "On July 2, in Tokyo’s Suntory Hall, they’ll join a string orchestra to play Bruch, Paganini, Rossini and Boccherini."
“We’ll perform things we love playing,” says Sulic. “But we’ll also play string orchestra arrangements from our most recent album, ‘Celloverse,’ and movie music by (Enrico) Morricone and (Hans) Zimmer. Our shows are a great way to introduce classical music to a wide audience, and we plan to do more solely classical concerts in the future.”