The 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].


[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.
Three of our new putative optima for sphere packing have been published