You can read a good dal about the response of the Foederatio Internationalis Una Voce (FIUV) to the survey of the world's bishops on the Traditional Mass carried out by the CDF earlier this year in the newly published magazine of the FIUV: Gregorius Magnus 10.
Having recently returned from Rome, I can say from multiple sources that what the bishops have said about the EF in their dioceses is not all negative by any means, and no one seems to expect any bad outcomes from this survey. Nevertheless, the FIUV has also presented the CDF with a report, covering 364 dioceses from 52 countries, of the experiences of the traditional faithful, whether in enjoying the Traditional Mass or merely asking for it, to supplement the perspective of the world's bishops.
Gregorius Magnus also has much else of interest which I hope readers will appreciate, including extracts from traditional Catholic magazines from around the world, some published in English for the first time.
It is now available as a pdf here.