The entirely newly-orchestrated re-working will be released as a special edition 4-disc box set.
Barcelona - The Special Edition will be released on September 3 to mark the 25th anniversary of the lead 'Barcelona' single.
It will also be available as a standard CD, vinyl and download.
The album re-release is followed by a brand new documentary produced and directed by Rhys Thomas titled The Great Pretender.
Exploring Mercury's solo career and life away from Queen, it features re-discovered interviews and previously-unseen footage and is released on DVD and Blu-ray on September 24.
Watch the new Rhys Thomas 'Barcelona 2012' video starring Freddie Mercury and Montserrat Caballé below: