Today, the Vatican Information Service confirmed that this has now been determined, and the Holy Father will consecrate the church:
VATICAN CITY, 4 MAR 2010 (VIS) - Benedict XVI is due to visit the Spanish cities of Santiago de Compostela and Barcelona in November this year, according to announcements made yesterday by Archbishop Julian Barrio Barrio of Santiago de Compostela, and Cardinal Lluis Martinez Sistach, archbishop of Barcelona.
The Holy Father will travel to Santiago de Compostela on 6 November, for the occasion of the Compostela Holy Year, then move on to Barcelona on 7 November where he will consecrate the church of the "Sagrada Familia".
Aside from being a significant event given the fame of this church, one which was under construction for so many decades, this event may also provide a venue to hear Benedict speak on continuity and development as it relates to the liturgy and the liturgical arts.