There is no change in Tashkent, only she gets uptiered, & tier 9 upgrade slots and Repair Party.
Credit compensation when Soviet DDs are splitting:
If a player had purchased Gnevny V and Ognevoi VI before the update was released, then a bonus in the amount of 3,150,000 Credits will be added to the player’s account.
If a player had purchased Kiev VII and Tashkent VIII, then a bonus in the amount of 8,800,000 Credits will be added to the player’s account.
If a player had purchased Tashkent VIII and Udaloi IX, then a bonus in the amount of 13,200,000 Credits will be added to the player’s account.