From Wikipedia:

Pope Benedict released the document after “much reflection, numerous consultations, and prayer.” In the document itself, he stated that the Tridentine Mass and other pre-Conciliar forms of the sacraments were “never abrogated” and that “a priest does not require any permission” to celebrate them. The Pope authorized celebration of a Tridentine Mass in parishes on Sundays and feasts where such a desire “exists stably,” along with weddings, funerals, baptism, penance, and the Anointing of the Sick. However, only the diocesan bishop may administer Confirmation according to the pre-Conciliar Pontifical.

Reference:   Summorum Pontificum