Football's governing body did not elaborate on when We Are One (Ole Ola) will be released.
Written and co-produced by Pitbull, the song "is set to bring the passion of Brazil to the world" and "ignite the excitement felt by football fans" for the tournament kicking off in June.
Leitte said she is looking forward to "dancing samba with Pitbull and Jennifer Lopez in Brazil".
Lopez was not in Rio for the announcement.
Shakira wrote Waka Waka for the 2010 World Cup in South Africa.
COMMENT RULES: Comments that are judged to be defamatory, abusive or in bad taste are not acceptable and contributors who consistently fall below certain criteria will be permanently blacklisted. The moderator will not enter into debate with individual contributors and the moderator’s decision is final. It is Belfast Telegraph policy to close comments on court cases, tribunals and active legal investigations. We may also close comments on articles which are being targeted for abuse. Problems with commenting? firstname.lastname@example.org
You have an opportunity to make money from your handiwork. This is a great time to show the fruits of your labour to a publisher, gallery manager or boutique owner. If you enjoy cooking, devise a delicious recipe that is easy to enjoy on the go. So few people have time to treat themselves to a good meal. By providing them with nutritious food that can be taken anywhere, you'll make a big profit.More