Your question is answered in the Q&A page linked from the email:
Has the recent revert from Intel triggered this decision?
A: No. It is completely unrelated. This decision was made by our engineering management team and was based solely on the current quality feature set we defined for XMir, independent of any discussions with Intel.
Has the recent revert from Intel triggered this decision?
A: No. It is completely unrelated. This decision was made by our engineering management team and was based solely on the current quality feature set we defined for XMir, independent of any discussions with Intel.