These are the changes not mentioned in the official patchnotes:
Changes to the Progetto M35 Mod 46:
The aim spread on hull movement has been changed during the movement and rotation of the suspension from 0.2 to 0.16;
The suspension rotation speed has been changed from 40 to 46 ° / s;
Aim spread at the turret rotation has changed from 0.13 to 0.1;
Reload time changed from 8.5 / 10/14 s to 8/9/12 s;
Depression angle changed from -8 ° to -9 ° (front and sides);
The reload time displayed in the garage has changed from 40 s to 9.6 s.