Dedication 4 is a mixtape by Lil Wayne. The mixtape was originally supposed to be released on August 15, 2012, but got pushed several times and was released on September 3, 2012. It is the fourth installment of Lil Wayne's Dedication series, following its predecessors The Dedication, Dedication 2 and Dedication 3. It's also the fourth installment of Lil Wayne's "Gangsta Grillz" pentalogy.