b1.0 will contain the Avatar, along with Air Temples, new abilities, and some new blocks.
Somewhere between b1.0 and b2.0 a skill tree and better progression will be introduced
Players will now have a level for each main element, including the Avatar. Depending on their level, they gain buffs and passives to aid them in day-to-day tasks and combat. Additionally, higher levels allow you to gain more abilities, make you glow, and look cooler.