So, these two bishops-- NO assigned by Francis? Or from priests already within the SSPX? Or am I misunderstanding?
No, most likely, they (the future bishops) would be SSPX priests, approved by the Superior General and Counsel and submitted to Rome for final approval. Similar to what Bishop Fellay described in his Aug. 2016 New Zealand conference. (if you have not seen it, please do, specifically part 6, it is an important conferences. Bishop Fellay gave the entire plan that we see unfolding these past two years. I think he may have given too much information (with too much enthusiasm) as that conference was never widely publicized or quoted by the SSPX media outlets ever since.