[This post updated June 5, 2021 to add extra information and a link to more details at WNY Catholic.]
From the bulletin:
A Statement on a Return to Sunday Mass by the Roman Catholic Bishops of the Upstate New York Diocese of Buffalo, Ogdensburg, Rochester and Syracuse:
Now is time to return to Sunday Mass.
For those who are healthy and not at great risk, the presumption of the faithful should be that, unless they are at an enhanced risk, sick, or caring for others who are at risk or sick, the obligation to attend Sunday Mass now resumes, effective the weekend of June 5-6, 2021, the Solemnity of Corpus Christi, The Most Holy Body and Blood of Christ in our diocese.
Come home to Mass!
In another document, the bishops note,
The obligation to attend Holy Mass on the Lord’s Day is a sacred one. Anyone who is frail or at risk due to advanced age or medical conditions is always excused from this obligation, and we encouraged you to use your prudential judgement throughout this pandemic to determine if it was unsafe for you to attend Mass. This remains true.