difference between "early access" vs. "abyssal league"?

So I think I created a new character in the abyssal league, but then I see people saying we are in early access? I'm confused... Are these two things the same?

it's all early access right now. abyssal league is the current 0.3 league that will last 4 months. standard league is where your character will move after that. then you can make a new character in whatever the 0.4 league is.

you can also play standard but i dont think thats what most people do