We have some fsigma8 data available in preprint form in this paper. Since it has not been accepted for publication yet, please make sure you revisit the paper when it has been published.
One of the co-authors advises:
Table 9 displays the fsigma_s8 measurements (very similar to fsigma8) normalized by the fiducial value. Those fiducial values can be found in table 11, so just by multiplying the fsigmas8 column from table 11 times the fsigma_s8/(fsigma_s8)fid from table 9 it should result on the measurements displayed in fig 14. However, these measurements are correlated with the other shapefit parameters, and this correlation matrix is yet not publicly available.