Backer 40$ tier

Will the people who doneted for the above tier get acces at the same time as steam early acces players get it. Or do we have to wait until beta starts?

You have to wait before beta starts, or you may upgrade to alpha tier on Uber Store.
But it's fair because steam early access will cost 90$ (like alpha tier on Kickstarter).

You ordered beta. That means you will get in at beta.

Wrong. 40 dollars is the price of release, not beta. You would get access in December.

According to Kickstarter:

Pledge $40 or more

5513 backers

Early access to the Beta, a copy of the digital game soundtrack, and access to the private discussion community. Includes all previous tiers.

So the $40 tier includes beta access, at the point beta is released. Most likely it will work like alpha; you'll get emailed a beta key for UberNet which you can exchange for a Steam key if you prefer to play through Steam.

technically, your both right, it depends when ddonut donated, kickstarter $40 is beta, uberstore $40 is retail.

This. It all depends on whether you were an early backer or a pre-order.