In the fan question section of their current video Piranha Bytes' devs Jennifer & Bjorn Pankratz said that their "current game in development" (=ELEX 2) is already completely playable and they are fine tuning it. There's still a lot of work to do, but QA is already testing it and errors get eliminated all the time.
Sounds like the end-phase of development for me!
More information.
Sounds like the end-phase of development for me!
More information.