This are the 9.10 armor changes for the Jagdtiger:
Despite the color changes, the armor remains practically the same. The only serious change is the mantlet and the armor behind it. The old Jagdtiger had 240+100mm (inside mantlet part) and 100+250mm (outer part), the new one has 240+80mm (small inner part) and 100mm+150mm (outer part). Overall it's a nerf but not a big one.
Going to rush my grind before 9.10... My Jagdtiger is already fully upgraded and I'm working for the tier 10.