Wiz Khalifa is sharing the stage at a number of hip hop festivals this summer with fellow baller Lil Wayne. While Wiz will be dropping verses from his latest album Rolling Papers, Lil Wayne will probably be hyping his latest record Tha Carter IV. Although Carter has been pushed back a number of times, Young Money President Mack Maine has said that he believes the album will be released on June 21. Some of the hold-ups were attributed to delays from contributors to the album. According to Wayne, the album’s cover leaked online a mere two hours after it had been approved.