[2019] Stumbled across this..

We are glad to hear that our project looks promising for you!
Q1 2019 means that the last possible day for starting the Early Access is 31 March. Right now the game is in Alpha Testing. So you could buy pre-order bundles and the Access Codes would be sent to you closer to the date. Release date would be announced later.

Originally posted by Jamie:
Is that 31st March for the free version or 2 month early access?

The game is F2P. So it's the last possible day for buying pre-order the Early Access.