Seems that between 9.16 and the micropatches that the T26E5 Premium heavy tank has been added to the game files. These are the new stats:
HP: 1500
Engine Power: 704 (Up from 500)
Weight: 46.402 tons
Power to Weight: 15.17
Max Speed: 40.2kph (for.)/ 15kph (rev.)
Hull Traverse: 30°sec
Turret Traverse: 26.1°sec
Terrain Resistances: 1,151/1,342/2,589
View Range: 390m
Radio Range: 776.9
Hull Armor: 152.4/76.2/50.8mm
Turret Armor: 190.5/101.6/127mm

90Mm T7E1 (changed from 90mm M3A1)
Damage: 240/240/320
Penetration: 230/259/45mm
Rate of Fire: 8.69 (changed from 8.126)
DPM: 2085.7 (up from 1953)
Reload: 6.904s (from 7.384s)
Accuracy: 0.364
Aim Time: 2.21
Elevation/Depression: +20°/-10°