Said sources wish to remain anonymous, but I can say they are diocesan secular, not FSSP.
Father Z. picked this up yesterday and posted it, many thanks to him for that. Also to Frank Walker at canon212.com and several other aggregators who picked it up.
Earlier today, Fr. Z. posted an update:
So there you go. New archbishop, new rules, Traditional nuns no longer welcome in the archdiocese. I just asked the communications director for a statement for the second time. I wonder what their standards are for diversity and inclusion, you know?
Because guess who is totally welcomed in the archdiocese?
And the FSSP better watch out, because you can’t have the TLM without a lot of kneeling. The archbishop HATES kneeling.
I only know one thing about new Philly Archbishop Nelson Jesus Perez
He banned kneeling at Mass in the Diocese of Cleveland last year. HERE