The www.packomania.com site has certified that 3 (out of our 5 submissions) of new putative optima are indeed improvements. The other two had already been discovered but not yet published.

From the official web site  for sphere packing:

29-Jun-2018: Three improvements for N=83, 96 and 109 by Francesco Bagattini, Fabio Schoen and Luca Tigli [30].

References

[30]   F. Bagattini, F. Schoen, L. Tigli, Clustering methods for the optimization of atomic structure, J. Chem. Phys 148(14) (2018), 144102, and private communication, June 2018.
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Three of our new putative optima for sphere packing have been published