The music event will be held at London's Victoria Park between June 15-17 for one year only, moving from its usual slot of mid-July.
Although no specific reason has been given for the move, it is presumed that the organisers were keen to avoid a clash with the London 2012 Olympics in East London.
However, the event's bosses have promised another year of superstar headliners and the best emerging talent to grace the festival's stages.
The full lineup for Lovebox, which will celebrate its tenth anniversary in 2012, will be announced in due course, but tickets for the event are available to buy now.
Last year's show saw performances from Snoop Dogg, Blondie, Scissor Sisters, Kelis, Robyn, Katy B, Example and many more.
> Snoop Dogg performs 'Doggystyle' at London's Lovebox
> Katy B, Fenech-Soler play London's Lovebox
Watch highlights from last year's Lovebox below: