Japan Today have announced that AKB48's new leader is Mayu Watanabe! With 159,854 votes.
She's replacing Rino Sashihara. Rino came second to Mayu, with 141 954 votes.
There were apparently over 70,000 fans who went to the concert to find out who the new leader would be. There was extra security for the concert following the attack on two of the members last month. Rina (one of the girls attacked) did make an appearance at the concert.