I found one pic of the interior.
The Tank-Ex will offer a huge leap in ergonomics and compartment space when compared to the conventional T-72, thanks to the implementation of the Arjun's crew station design. A crew of four, including the driver, is now carried. 32 rounds of FSAPDS and HESH ammunition are carried, with 18 ready rounds in the rotating turret. Tank-Ex is yet to enter user trials.