Morrissey [ tickets ]'s forthcoming "Greatest Hits" collection will be released in the US Mar. 25, according to a press release. The compilation will be available in three versions: a regular jewel box version containing 15 tracks; a deluxe, limited-edition version that features a "Live at the Hollywood Bowl" bonus CD; and as a double vinyl LP. The "Greatest Hits" package spans Morrissey's 20-year career as a solo artist. The three versions of the album will include two new songs--the new single, "That's How People Grow Up," and "All You Need Is Me." Morrissey also is working on a new studio album that will follow up on his 2006 release, "Ringleader of the Tormentors." The English pop singer, who started his career as the frontman of The Smiths, will tour Europe this year, and has a new studio album due out in the fall.