UPDATE: 04.17.19: Last year, the Austin City Limits Festival lineup dropped on May 1 and festival organizers tell us they are operating on a similar timeline this year, although a firm release date has not been set. Much has happened since we posted our best fest guesses in March, gentle ACL-goer (or ACL-curious music fan). Several major festivals have announced lineups, countless artists have released fall tour schedules and some shindig in Indio, Calif. kicked off last weekend. We're still feeling strong about several of last month's predictions including Childish Gambino, Cardi B and Tame Impala, but there are some new names we should also discuss...