Yesterday, Herointeractive posted that they are working on a BT3, and it's supposed to come out in Fall! I liked the first two, and this one is supposed to have more tanks, new weapons, etc
No, Bubble Tanks Arenas is a spin off where you can't move to other bubblefields until all other bubbles are popped, and then you can only move to the right. But you can customize your own Tank in very different ways.
Bubble Tanks 3 is said to have new weapons and abilities, "allies" as they called it (Multiplayer possibly), and going back to the Blue Color Scheme....