eggplant.io vs. testplant.com

…I’m a bit confused about the whole domain mess that is happening.
I have the impression that every other week something changes from testplant.com to eggplant.io and vice-versa.
What’s the strategy, what is the new domain? Right now greenhouse seems only to be working with greenhouse.testplant.com and not anymore with greenhouse.eggplant.io

We had a temporary outage with Greenhouse. All of the domains are being switched to eggplant.io.