Apple has announced it is bringing the iTunes Festival to the U.S. for the first time. The event — which previously has only taken place in London — will be held at SXSW in Austin, Texas, from March 11-15, at ACL Live at the Moody Theater. Coldplay, Imagine Dragons, Pitbull, Keith Urban, and ZEDD have already been announced as acts. All five nights of the event will be able to watch as a free stream on the iTunes Store, and the iTunes Festival…