Del Bosque announced his pre-selection for this summer's tournament earlier this month, but did not include any Barcelona, Chelsea or Athletic Bilbao players in his roster as they still had club obligations.
However, Torres and Mata have now been included in the provisional list after completing their commitments with Chelsea following their Champions League final win over Bayern Munich, and will now join the rest of the squad for the training camp in Austria on May 25.
Del Bosque will add players from Barcelona and Athletic Bilbao to the group after the Copa del Rey final, before announcing his final squad on May 27.
Spain start Euro 2012 with the Group C match against Italy on June 10, before taking on Republic of Ireland and Croatia.
Spain's updated provisional squad list:
|Iker Casillas||Real Madrid|
|David De Gea||Manchester United|
|Raul Albiol||Real Madrid|
|Alvaro Arbeloa||Real Madrid|
|Alvaro Domínguez||Atletico Madrid|
|Sergio Ramos||Real Madrid|
|Juanfran Torres||Atletico Madrid|
|Xabi Alonso||Real Madrid|
|David Silva||Manchester City|
|Adrian Lopez||Atletico Madrid|