After a few months of interchangeable summer festival lineup announcements featuring ’90s alt-rock reunions and trendy indie acts, it’s always refreshing to hear what traveling hip-hop celebration Rock the Bells is planning — and this year’s just-released roster doesn’t disappoint. The biggest news, as far as we’re concerned, is the return of Missy Elliott, who will appear alongside longtime collaborator Timbaland as “very special guests.” Also on the agenda is Bone Thugs-N-Harmony’s 20th anniversary reunion, for which they’ll play their classic 1995 album E. 1999 Eternal in its entirety. Other noteworthy bookings include Salt-N-Pepa, Kid Cudi, Nas, Wiz Khalifa, Ice Cube, A$AP Rocky, Deltron 3030, Slick Rick, Yelawolf, and just about as many Wu Tang members as you’ve come to expect from Rock the Bells. In 2012, the festival will visit three cities, hitting OS Events Center in San Bernardino, California on August 18th and 19th; Shoreline Amphitheatre in Mountain View, California on August 25th and 26th, and PNC Bank Arts Center in Holmdel, New Jersey September 1st and 2nd. See the full lineup after the jump.