“We know for sure there will be a concert in September expected to gather 60,000 people. There are talks with a a company promotinh the band U2. If it will not be U2, then it will be one of the best five-six bands […],” said Bogdan Hreapca, head of investments in the Bucharest City Hall.
“It is true we would like to bring a band like U2 in Romania to inaugurate the stadium, but it is still early to say whether we will manage to do so,” Hreapca went on.
From
http://www.romania-insider.com/bucharest-city-hall-discussions-with-u2-for-september-concert-in-romania/17088/
Hope it'll be U2 then!
(If not, DM will do, for me

