It is possible that I am not updated with some previous news but as far as I know it was main sale which started in June and will close today on 30th. I don't know when it was announced these phase 1 or second because early in July exchange should go live according to information and plan.
If i'm not mistaken developers have announced this in the mid of June.
The best way to be informed is to follow cgcx
in the telegram.CGCX.io is having our Soft Launch Promotion! Trade cryptocurrencies on our exchange with 0% transaction fees from 1 July 2018 to 31 August 2018. Register your trading account at CGCX.io today!
That's great news. I will definitely try it!