Looks like they are really killing off the E4...
Max speed of T110E4 suspension decreased from 28 km/h to 26 km/h
Max reverse speed changed from12 km/h to 10 km/h
Turret side armoring changed from 203 mm to 152 mm
Armoring of T110E4 turret cheekbones changed from 254 mm to 203 mm
Armoring of T110E4 gun mantlet changed from 305 mm to 254 mm
Aiming time of 155 mm AT Gun T7E2 gun changed from 2.7 sec. to 2.9 sec.
Reloading time of 155 mm AT Gun T7E2 changed from 20.2 sec. to 21 sec.
Dispersion of 155 mm AT Gun T7E2 changed of 0.36 m to 0.37 m
That's a disappointment, only reason I went for US tree but I suppose I'm only at T29 so not that much invested.