Accoring to paramore's wikipedia page,
"In September 2009, record producer, singer and rapper, Timbaland announced that Paramore would feature on Shock Value 2, the follow up to his 2007 platinum selling record, Shock Value. Other artists on the album include Lady GaGa and Kings of Leon. The album is currently scheduled to be released on November 23 in Europe and November 24 in North America. Paramore recorded a performance for MTV Unplugged and it can now be viewed on MTV.com."