When can I buy at poloniex exchange?
Since poloniex has the power to decide which projects will be in his exchange, we can not say an exact date, since it would be a lie. There are other exchanges that only ask for a fee to list on their exchanges, but poloniex is not one of them.
Are you in touch with the poloniex team about getting the listing or are you just going to wait for them. I ask because I think you need to be proactive in this to get the listing for safer trading.