Kevin Winter, Getty Images
The quartet will appear on the morning show's summer concert series on Aug. 31 in Central Park.
Richardson announced he was leaving the group in 2006, but has appeared in the lineup occasionally since. The remaining Backstreet Boys -- Nick Carter, Howie Dorough, Brian Littrell and AJ McLean -- announced Richardson would be rejoining them permanently during a performance in London last April.
A statement says all five are in a London studio with producer Martin Terefe working on a new album that will be released next spring to coincide with the group's 20th anniversary.
Carter says the group "couldn't be happier to have our brother back with us."
Copyright 2012 The Associated Press. The information contained in the AP news report may not be published, broadcast, rewritten or otherwise distributed without the prior written authority of The Associated Press. Active hyperlinks have been inserted by AOL.
- One Direction
- Jonas Brothers
- Hanson
- 'N Sync
- Backstreet Boys
- New Kids on the Block
- Menudo
- The Osmonds
- The Jackson 5
- The Beatles
- Boy Bands: Where Are They Now?
- 98 Degrees Then
- 98 Degrees Now
- Hanson Then
- Hanson Now
- O-Town Then
- O-Town Now
- Color Me Badd Then
- Color Me Badd Now
- LFO Then
- LFO Recently
- Naked Brothers Band Then
- Naked Brothers Band Now
- B2K Then
- B2K Now
- Take That Then
- Take That Now
- Westlife Then
- Westlife Now
- Justin Bieber for Complex Magazine April/May 2012
- Kids' Choice Awards Performance Gallery
- Ricky Martin Through the Years
Kellie Pickler Advances to 'Dancing With the Stars' Finals
Jennifer Hudson Performs 'Inseparable' With 'American Idol' Winner Candice Glover
Taylor Swift Admired George Jones' Passion for Performing
Tim McGraw Stops Atlanta Show to Help Ailing Fan
Carrie Underwood Says She's 'Queen of Awkward' in Marie Claire Interview
Rock the Bells 2013 Lineup Includes Ol' Dirty Bastard & Eazy-E Holograms
Lil Wayne's Emmett Till Lyric Was Never Meant for Public Consumption
Kree Harrison Debuts Potential Single 'All Cried Out' During 'American Idol' Finale
Mario Announces Nicki Minaj Collaboration, 'Somebody Else'
Man Arrested After Midnight Swim Near Taylor Swift's Rhode Island Home