News articles and photos can be seen at the following links:
Turkey: Patriarch Holds Historic Mass at Monastery
After 88 Years, Orthodox Christians Hold Mass at Monastery in Turkey
Orthodox Christians From Abroad Gather in Turkey's Sumela After 88 Years
Turkey: Orthodox Christians Gather For First Mass in Almost 90 Years at Ancient Monastery
Sümela To Host Historic Mass Amidst Nationalist Protests
In Pictures: Historic Orthodox Mass at Ancient Turkish Monastery
The Icons of Panagia Soumela of Pontus
Turkey: Bartholomew I Celebrates First Mass at Our Lady of Sumela After 88 Years
Orthodox Christians Flock to Once-Banned Holy Site of Sumela Monastery in Turkey
The homily of Ecumenical Patriarch Bartholomew can be read here and seen below, along with some footage from the Divine Liturgy below that: